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STATISTICS for VIETNAM


GEMS/WATER - STATISTICAL SUMMARY BY STATION     2002-06-24   PAGE   1

 STATION - MY THO - MEKONG RIVER                    STATION NO. 149001
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/21/16  LONG. 106/22/16  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1985-05-15 TO 1987-12-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       32         30         32         32         30
 MEAN                         44.       28.7       0.18       0.05        6.6
 MINIMUM                       8.       26.0       0.00       0.00        5.3
 DATE OF MINIMUM       1986-01-15 1987-12-15 1985-05-15 1985-05-15 1985-11-15
 10TH PERCENTILE              11.       26.9       0.02       0.01        5.7
 MEDIAN                       15.       28.4       0.17       0.03        6.4
 90TH PERCENTILE              50.       30.5       0.29       0.10        7.3
 MAXIMUM                     480.       32.2       0.44       0.39        8.4
 DATE OF MAXIMUM       1987-05-15 1987-04-15 1986-06-15 1986-08-14 1987-01-15
 STANDARD DEVIATION          100.        1.4       0.11       0.07        0.8




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       30         32         32         32         31
 MEAN                          3.       1.06        7.5        14.        58.
 MINIMUM                       0.       0.64        7.0         0.         4.
 DATE OF MINIMUM       1987-07-15 1987-07-15 1987-08-14 1985-05-15 1986-09-14
 10TH PERCENTILE               2.       0.81        7.1         0.         4.
 MEDIAN                        3.       1.06        7.4         0.         7.
 90TH PERCENTILE               4.       1.34        7.8        45.        19.
 MAXIMUM                       8.       1.56        8.0       183.       881.
 DATE OF MAXIMUM       1986-08-14 1987-06-15 1987-03-15 1987-10-15 1987-05-15
 STANDARD DEVIATION            1.       0.21        0.3        40.       184.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       31         27         22         32         30
 MEAN                         10.      0.050       3.53      0.016      0.118
 MINIMUM                       3.      0.001       0.21      0.000      0.044
 DATE OF MINIMUM       1987-01-15 1987-06-15 1987-02-15 1985-05-15 1987-02-15
 10TH PERCENTILE               3.      0.006       0.44      0.000      0.057
 MEDIAN                        5.      0.048       4.12      0.009      0.097
 90TH PERCENTILE              12.      0.100       4.78      0.043      0.203
 MAXIMUM                      83.      0.132       5.12      0.080      0.337
 DATE OF MAXIMUM       1987-05-15 1985-12-17 1986-10-14 1985-06-26 1985-11-15
 STANDARD DEVIATION           19.      0.039       1.52      0.019      0.069




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       32         32         31         31         32
 MEAN                         28.        93.        3.6     17.560       3.17
 MINIMUM                       3.         3.        1.4      9.940       0.00
 DATE OF MINIMUM       1986-07-15 1986-07-15 1986-09-14 1987-12-15 1985-05-15
 10TH PERCENTILE               8.         3.        1.4     11.540       0.44
 MEDIAN                       15.         6.        1.8     15.630       2.73
 90TH PERCENTILE              33.        24.        2.3     21.688       5.82
 MAXIMUM                     287.      1497.       37.6     52.405       9.72
 DATE OF MAXIMUM       1987-04-15 1987-05-15 1987-05-15 1987-05-15 1985-09-19
 STANDARD DEVIATION           51.       315.        7.3      8.203       2.10




 STATION - MY THuan - MEKONG RIVER                  STATION NO. 149002
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/16/47  LONG. 105/54/19  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1985-05-15 TO 1987-12-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       31         30         32         32         30
 MEAN                         45.       28.7       0.18       0.05        6.6
 MINIMUM                       8.       26.0       0.00       0.00        5.3
 DATE OF MINIMUM       1986-01-15 1987-12-15 1985-05-15 1985-05-15 1985-11-15
 10TH PERCENTILE              11.       26.9       0.02       0.01        5.7
 MEDIAN                       15.       28.4       0.17       0.03        6.4
 90TH PERCENTILE              53.       30.5       0.29       0.10        7.3
 MAXIMUM                     480.       32.2       0.44       0.39        8.4
 DATE OF MAXIMUM       1987-05-15 1987-04-15 1986-06-15 1986-08-14 1987-01-15
 STANDARD DEVIATION          102.        1.4       0.11       0.07        0.8




                              COD        ALK         Na         Mg         Al
                                       TOTAL       DISS      TOTAL       DISS
                            08301      10121      11103      12003      13102
                          mg/L O2      MEQ/L    mg/L Na    mg/L Mg    mg/L Al


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       30         32         31         31         27
 MEAN                          3.       1.06        58.        10.      0.050
 MINIMUM                       0.       0.64         4.         3.      0.001
 DATE OF MINIMUM       1987-07-15 1987-07-15 1986-09-14 1987-01-15 1987-06-15
 10TH PERCENTILE               2.       0.81         4.         3.      0.006
 MEDIAN                        3.       1.06         7.         5.      0.048
 90TH PERCENTILE               4.       1.34        19.        12.      0.100
 MAXIMUM                       8.       1.56       881.        83.      0.132
 DATE OF MAXIMUM       1986-08-14 1987-06-15 1987-05-15 1987-05-15 1985-12-17
 STANDARD DEVIATION            1.       0.21       184.        19.      0.039




                               Si      PO4-P          P   SULPHATE         Cl
                         REACTIVE        SOL      TOTAL                  DISS
                            14101      15254      15405      16303      17201
                         mg/LSiO2   mg/L PO4     mg/L P   mg/L SO4    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         32         30         32         32
 MEAN                        3.53      0.016      0.118        28.        93.
 MINIMUM                     0.21      0.000      0.044         3.         3.
 DATE OF MINIMUM       1987-02-15 1985-05-15 1987-02-15 1986-07-15 1986-07-15
 10TH PERCENTILE             0.44      0.000      0.057         8.         3.
 MEDIAN                      4.12      0.009      0.097        15.         6.
 90TH PERCENTILE             4.78      0.043      0.203        33.        24.
 MAXIMUM                     5.12      0.080      0.337       287.      1497.
 DATE OF MAXIMUM       1986-10-14 1985-06-26 1985-11-15 1987-04-15 1987-05-15
 STANDARD DEVIATION          1.52      0.019      0.069        51.       315.



                                K         Ca         Fe
                             DISS       DISS      TOTAL
                            19103      20101      26002
                           mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       31         31         32
 MEAN                         3.6     17.560       3.17
 MINIMUM                      1.4      9.940       0.00
 DATE OF MINIMUM       1986-09-14 1987-12-15 1985-05-15
 10TH PERCENTILE              1.4     11.543       0.44
 MEDIAN                       1.8     15.631       2.73
 90TH PERCENTILE              2.3     21.687       5.82
 MAXIMUM                     37.6     52.405       9.72
 DATE OF MAXIMUM       1987-05-15 1987-05-15 1985-09-19
 STANDARD DEVIATION           7.3      8.203       2.10




 STATION - TAN CHAU - MEKONG RIVER                  STATION NO. 149003
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/47/12  LONG. 105/14/01  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1985-05-15 TO 1987-12-14

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       32         30         32         32         30
 MEAN                         13.       28.6       0.16       0.04        6.8
 MINIMUM                       8.       25.6       0.00       0.00        6.1
 DATE OF MINIMUM       1986-01-15 1987-12-14 1985-05-15 1985-05-15 1985-11-15
 10TH PERCENTILE               9.       26.6       0.07       0.01        6.2
 MEDIAN                       13.       28.3       0.15       0.02        6.7
 90TH PERCENTILE              20.       30.6       0.28       0.07        7.4
 MAXIMUM                      23.       31.6       0.41       0.32        8.8
 DATE OF MAXIMUM       1987-06-15 1987-05-14 1986-06-15 1986-08-14 1987-01-15
 STANDARD DEVIATION            4.        1.5       0.09       0.06        0.6




                              COD        ALK         Na         Mg         Al
                                       TOTAL       DISS      TOTAL       DISS
                            08301      10121      11103      12003      13102
                          mg/L O2      MEQ/L    mg/L Na    mg/L Mg    mg/L Al


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       30         32         31         31         24
 MEAN                          3.       1.11         6.         4.      0.053
 MINIMUM                       1.       0.59         3.         1.      0.004
 DATE OF MINIMUM       1987-06-15 1987-07-15 1986-08-14 1985-07-16 1987-08-15
 10TH PERCENTILE               1.       0.83         3.         3.      0.007
 MEDIAN                        3.       1.05         5.         3.      0.030
 90TH PERCENTILE               5.       1.51        10.         6.      0.114
 MAXIMUM                       7.       1.65        11.         8.      0.157
 DATE OF MAXIMUM       1986-09-14 1987-06-15 1987-06-15 1987-12-14 1985-08-15
 STANDARD DEVIATION            2.       0.24         2.         2.      0.045




                               Si      PO4-P          P   SULPHATE         Cl
                         REACTIVE        SOL      TOTAL                  DISS
                            14101      15254      15405      16303      17201
                         mg/LSiO2   mg/L PO4     mg/L P   mg/L SO4    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         32         31         32         32
 MEAN                        4.18      0.016      0.120         7.         5.
 MINIMUM                     2.79      0.000      0.030         0.         2.
 DATE OF MINIMUM       1987-01-15 1985-05-15 1986-04-14 1985-06-26 1986-10-14
 10TH PERCENTILE             3.06      0.000      0.040         3.         2.
 MEDIAN                      4.20      0.010      0.090         6.         4.
 90TH PERCENTILE             4.93      0.037      0.237        13.         8.
 MAXIMUM                     5.51      0.068      0.410        19.        12.
 DATE OF MAXIMUM       1986-05-15 1985-07-16 1985-06-26 1987-06-15 1987-06-15
 STANDARD DEVIATION          0.65      0.017      0.086         4.         2.





                                K         Ca         Fe
                             DISS       DISS      TOTAL
                            19103      20101      26002
                           mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       31         30         32
 MEAN                         1.6     15.748       3.35
 MINIMUM                      1.1      8.597       0.00
 DATE OF MINIMUM       1986-10-14 1987-07-15 1985-05-15
 10TH PERCENTILE              1.2     10.541       0.39
 MEDIAN                       1.5     15.300       3.07
 90TH PERCENTILE              2.1     20.882       6.51
 MAXIMUM                      2.7     23.627       9.29
 DATE OF MAXIMUM       1985-08-15 1987-06-15 1986-09-14
 STANDARD DEVIATION           0.4      3.860       2.43




 STATION - CAN THO - BASSAC RIVER                   STATION NO. 149004
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/03/27  LONG. 105/48/28  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1985-05-15 TO 1987-12-14

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       32         29         32         32         29
 MEAN                         13.       28.8       0.16       0.04        6.5
 MINIMUM                       8.       23.8       0.00       0.00        5.3
 DATE OF MINIMUM       1986-01-15 1985-07-16 1985-05-15 1985-05-15 1987-10-14
 10TH PERCENTILE               9.       26.3       0.02       0.01        5.4
 MEDIAN                       12.       28.8       0.13       0.03        6.4
 90TH PERCENTILE              20.       30.6       0.28       0.09        7.5
 MAXIMUM                      22.       31.6       0.46       0.17        8.7
 DATE OF MAXIMUM       1987-06-14 1987-05-14 1986-06-15 1987-11-14 1987-01-14
 STANDARD DEVIATION            4.        1.8       0.10       0.04        0.8




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       30         32         32         32         31
 MEAN                          3.       1.08        7.6        19.         5.
 MINIMUM                       1.       0.64        7.2         0.         3.
 DATE OF MINIMUM       1987-06-14 1987-07-14 1987-08-14 1985-05-15 1986-08-14
 10TH PERCENTILE               1.       0.81        7.2         0.         3.
 MEDIAN                        2.       1.05        7.6         0.         5.
 90TH PERCENTILE               4.       1.48        7.8        38.        10.
 MAXIMUM                       6.       1.60        8.1       305.        11.
 DATE OF MAXIMUM       1986-08-14 1987-06-14 1987-04-14 1987-10-14 1987-05-14
 STANDARD DEVIATION            1.       0.23        0.2        61.         2.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       31         25         22         32         31
 MEAN                          4.      0.043       4.05      0.016      0.098
 MINIMUM                       1.      0.002       1.76      0.000      0.038
 DATE OF MINIMUM       1985-06-26 1987-08-14 1987-02-14 1985-05-15 1987-06-14
 10TH PERCENTILE               2.      0.008       2.42      0.000      0.050
 MEDIAN                        3.      0.030       4.26      0.010      0.081
 90TH PERCENTILE               6.      0.078       5.03      0.036      0.187
 MAXIMUM                       9.      0.139       5.78      0.083      0.330
 DATE OF MAXIMUM       1986-04-14 1985-08-15 1986-05-15 1985-07-16 1985-06-26
 STANDARD DEVIATION            2.      0.033       0.99      0.019      0.062




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       32         32         31         31         32
 MEAN                          6.         5.        1.6     14.949       2.28
 MINIMUM                       1.         2.        1.2      8.597       0.00
 DATE OF MINIMUM       1985-10-15 1986-11-14 1986-10-14 1985-06-26 1985-05-15
 10TH PERCENTILE               2.         2.        1.2      9.292       0.44
 MEDIAN                        5.         4.        1.6     14.709       2.03
 90TH PERCENTILE              13.         8.        2.0     20.200       4.10
 MAXIMUM                      18.        12.        2.7     22.124       5.90
 DATE OF MAXIMUM       1987-06-14 1987-06-14 1985-06-26 1986-05-15 1985-08-15
 STANDARD DEVIATION            4.         2.        0.4      3.707       1.55




 STATION - CHAU DOC - BASSAC RIVER                  STATION NO. 149005
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/42/00  LONG. 105/06/50  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1985-05-15 TO 1987-12-14

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       32         30         32         32         31
 MEAN                         13.       29.1       0.15       0.05        6.6
 MINIMUM                       7.       24.6       0.00       0.00        4.3
 DATE OF MINIMUM       1986-01-15 1986-01-15 1985-05-15 1985-05-15 1985-05-15
 10TH PERCENTILE               8.       26.9       0.04       0.01        5.4
 MEDIAN                       12.       29.0       0.12       0.03        6.8
 90TH PERCENTILE              19.       31.2       0.29       0.08        7.9
 MAXIMUM                      21.       32.7       0.51       0.35        9.1
 DATE OF MAXIMUM       1987-06-14 1987-05-14 1986-06-15 1986-08-14 1987-01-14
 STANDARD DEVIATION            4.        1.8       0.11       0.06        1.1




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       30         32         32         32         31
 MEAN                          3.       1.04        7.6        16.         5.
 MINIMUM                       1.       0.58        7.1         0.         3.
 DATE OF MINIMUM       1987-05-14 1987-07-14 1987-12-14 1985-05-15 1986-08-14
 10TH PERCENTILE               2.       0.73        7.2         0.         3.
 MEDIAN                        3.       0.98        7.6         0.         4.
 90TH PERCENTILE               4.       1.46        8.1        30.        10.
 MAXIMUM                       6.       1.58        8.3       237.        11.
 DATE OF MAXIMUM       1986-09-14 1987-05-14 1986-05-15 1987-09-14 1987-05-14
 STANDARD DEVIATION            1.       0.26        0.3        55.         2.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       31         25         22         32         30
 MEAN                          4.      0.041       3.91      0.013      0.089
 MINIMUM                       2.      0.004       1.84      0.000      0.022
 DATE OF MINIMUM       1985-10-15 1986-01-15 1987-01-14 1985-05-15 1987-02-14
 10TH PERCENTILE               2.      0.009       2.09      0.000      0.038
 MEDIAN                        4.      0.030       4.18      0.007      0.066
 90TH PERCENTILE               6.      0.079       4.83      0.030      0.162
 MAXIMUM                       8.      0.097       5.82      0.072      0.320
 DATE OF MAXIMUM       1987-12-14 1985-12-17 1986-05-15 1985-07-16 1985-06-26
 STANDARD DEVIATION            2.      0.029       1.02      0.017      0.063




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       32         32         31         31         32
 MEAN                          7.         4.        1.6     14.608       2.40
 MINIMUM                       1.         2.        1.1      6.433       0.00
 DATE OF MINIMUM       1985-08-15 1986-11-14 1986-11-14 1987-12-14 1985-05-15
 10TH PERCENTILE               1.         2.        1.2      8.120       0.17
 MEDIAN                        5.         3.        1.5     14.228       1.83
 90TH PERCENTILE              14.         8.        2.1     20.741       5.66
 MAXIMUM                      26.        12.        3.8     21.463       7.05
 DATE OF MAXIMUM       1985-05-15 1987-06-14 1985-06-26 1987-06-14 1985-08-15
 STANDARD DEVIATION            5.         3.        0.5      4.048       2.10




 STATION - RACH CHANH - PLAIN OF REEDS              STATION NO. 149006
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/32/59  LONG. 106/21/37  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-03-13 TO 1987-12-16

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         10         20         20         19
 MEAN                        297.       29.8       0.22       0.08        5.6
 MINIMUM                       9.       27.4       0.02       0.02        4.1
 DATE OF MINIMUM       1986-12-16 1987-01-17 1987-11-16 1986-11-17 1986-12-16
 10TH PERCENTILE               9.       27.4       0.02       0.02        4.6
 MEDIAN                       46.       29.9       0.12       0.04        5.7
 90TH PERCENTILE            1070.       31.8       0.51       0.17        6.8
 MAXIMUM                    1677.       32.1       0.65       0.38        7.1
 DATE OF MAXIMUM       1987-04-17 1987-10-16 1986-05-13 1986-05-13 1987-08-15
 STANDARD DEVIATION          547.        1.8       0.21       0.08        0.9




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       19         11         20         20         20
 MEAN                          4.       0.27        5.6         3.       634.
 MINIMUM                       0.       0.09        3.8         0.         5.
 DATE OF MINIMUM       1986-09-12 1986-05-13 1987-10-16 1986-03-13 1986-11-17
 10TH PERCENTILE               1.       0.09        4.0         0.         5.
 MEDIAN                        3.       0.25        6.1         0.        37.
 90TH PERCENTILE               9.       0.47        6.5        16.      2069.
 MAXIMUM                       9.       0.67        6.9        28.      3336.
 DATE OF MAXIMUM       1987-05-15 1987-04-17 1987-04-17 1987-11-16 1987-05-15
 STANDARD DEVIATION            3.       0.18        1.0         8.      1076.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         19         20         20         19
 MEAN                         83.      0.680       3.12      0.007      0.036
 MINIMUM                       3.      0.004       1.83      0.000      0.005
 DATE OF MINIMUM       1986-11-17 1987-03-19 1987-11-16 1986-05-13 1986-09-12
 10TH PERCENTILE               3.      0.010       1.84      0.000      0.006
 MEDIAN                       10.      0.090       3.11      0.002      0.028
 90TH PERCENTILE             247.      2.451       4.20      0.026      0.066
 MAXIMUM                     398.      3.878       5.77      0.039      0.110
 DATE OF MAXIMUM       1987-05-15 1987-09-16 1986-06-14 1987-12-16 1986-03-13
 STANDARD DEVIATION          128.      1.111       0.98      0.012      0.026




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         20         20         20         20
 MEAN                        264.      1164.       38.9     38.532       1.58
 MINIMUM                      19.         4.        1.0      4.570       0.21
 DATE OF MINIMUM       1986-12-16 1986-12-16 1987-11-16 1987-11-16 1986-09-12
 10TH PERCENTILE              22.         4.        1.1      5.830       0.22
 MEDIAN                      116.        55.        3.1     23.590       1.43
 90TH PERCENTILE             814.      3804.       65.6     92.440       3.00
 MAXIMUM                    1123.      6254.      398.4    148.600       3.49
 DATE OF MAXIMUM       1987-04-17 1987-04-17 1987-05-15 1987-05-15 1987-06-16
 STANDARD DEVIATION          330.      2024.       90.4     40.882       0.95





 STATION - LONG DINH - PLAIN OF REEDS               STATION NO. 149007
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/23/55  LONG. 106/15/30  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-03-13 TO 1987-12-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         11         22         22         21
 MEAN                         46.       29.5       0.19       0.08        5.4
 MINIMUM                      15.       26.5       0.02       0.02        3.0
 DATE OF MINIMUM       1986-07-12 1987-02-13 1987-12-15 1987-07-15 1987-02-13
 10TH PERCENTILE              17.       26.6       0.03       0.02        4.3
 MEDIAN                       32.       29.0       0.17       0.06        5.3
 90TH PERCENTILE              79.       31.5       0.35       0.14        6.3
 MAXIMUM                     138.       32.5       0.56       0.31        7.2
 DATE OF MAXIMUM       1987-04-17 1987-10-15 1986-06-14 1986-06-14 1986-07-12
 STANDARD DEVIATION           33.        1.9       0.13       0.07        0.9




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         16         22         22         22
 MEAN                          4.       0.77        6.1         4.        39.
 MINIMUM                       1.       0.10        3.1         0.         6.
 DATE OF MINIMUM       1987-06-16 1986-12-16 1987-11-15 1986-03-13 1986-03-13
 10TH PERCENTILE               1.       0.10        3.6         0.         7.
 MEDIAN                        3.       0.75        6.7         0.        23.
 90TH PERCENTILE               8.       1.36        7.6         7.        76.
 MAXIMUM                      13.       1.46        7.8        41.       190.
 DATE OF MAXIMUM       1987-02-13 1987-05-15 1987-05-15 1987-12-15 1987-04-17
 STANDARD DEVIATION            3.       0.49        1.5        12.        43.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         20         22         22         21
 MEAN                         16.      1.236       3.21      0.011      0.078
 MINIMUM                       5.      0.010       0.99      0.000      0.020
 DATE OF MINIMUM       1987-03-19 1986-08-14 1987-04-17 1986-11-17 1987-10-15
 10TH PERCENTILE               5.      0.012       1.23      0.000      0.024
 MEDIAN                       12.      0.060       3.04      0.007      0.079
 90TH PERCENTILE              33.      5.230       4.18      0.029      0.129
 MAXIMUM                      49.      9.754       7.01      0.043      0.183
 DATE OF MAXIMUM       1987-11-15 1987-12-15 1986-06-14 1987-05-15 1986-03-13
 STANDARD DEVIATION           12.      2.846       1.32      0.012      0.041




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         22         22         22
 MEAN                        101.        57.        3.7     21.232       3.87
 MINIMUM                      14.         3.        1.2     13.770       0.95
 DATE OF MINIMUM       1987-03-19 1986-09-12 1987-03-19 1987-01-17 1987-09-15
 10TH PERCENTILE              19.         8.        1.4     13.898       1.02
 MEDIAN                       73.        27.        2.8     18.640       3.12
 90TH PERCENTILE             221.       118.        5.5     26.294       6.78
 MAXIMUM                     386.       357.       15.6     67.070      11.50
 DATE OF MAXIMUM       1986-06-14 1987-04-17 1986-06-14 1986-06-14 1986-06-14
 STANDARD DEVIATION          100.        79.        3.3     11.364       2.59




 STATION - TUYEN NHON - PLAIN OF REEDS              STATION NO. 149008
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/39/00  LONG. 106/11/00  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-03-13 TO 1987-12-16

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22          9         22         22         20
 MEAN                         91.       30.1       0.17       0.11        5.6
 MINIMUM                       9.       27.8       0.01       0.00        3.9
 DATE OF MINIMUM       1986-11-17 1987-02-13 1987-10-16 1987-10-16 1987-05-15
 10TH PERCENTILE              12.                  0.01       0.01        4.2
 MEDIAN                       24.       29.0       0.12       0.05        5.5
 90TH PERCENTILE              84.                  0.43       0.22        6.7
 MAXIMUM                     933.       32.2       0.54       0.63        7.7
 DATE OF MAXIMUM       1987-05-15 1987-10-16 1986-05-13 1986-05-13 1986-08-14
 STANDARD DEVIATION          209.        2.0       0.17       0.14        0.9




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         13         22         22         22
 MEAN                          3.       0.18        5.5         3.       137.
 MINIMUM                       1.       0.03        3.6         0.         3.
 DATE OF MINIMUM       1987-06-16 1987-05-15 1987-09-16 1986-03-13 1986-11-17
 10TH PERCENTILE               1.       0.04        3.7         0.         4.
 MEDIAN                        3.       0.12        5.8         0.        11.
 90TH PERCENTILE               6.       0.37        6.8         0.        63.
 MAXIMUM                       7.       0.44        7.0        48.      1954.
 DATE OF MAXIMUM       1987-05-15 1986-07-12 1986-07-12 1987-12-16 1987-05-15
 STANDARD DEVIATION            2.       0.14        1.1        10.       435.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         21         22         22         18
 MEAN                         23.      1.471       3.50      0.005      0.054
 MINIMUM                       3.      0.004       1.60      0.000      0.005
 DATE OF MINIMUM       1986-11-17 1987-03-19 1987-11-16 1986-05-13 1986-08-14
 10TH PERCENTILE               4.      0.010       1.95      0.000      0.007
 MEDIAN                        8.      0.060       3.11      0.002      0.023
 90TH PERCENTILE              33.      5.602       5.09      0.014      0.071
 MAXIMUM                     208.     11.250       6.29      0.025      0.443
 DATE OF MAXIMUM       1987-05-15 1987-06-16 1987-06-16 1987-05-15 1987-10-16
 STANDARD DEVIATION           45.      2.980       1.21      0.007      0.100




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         22         22         22
 MEAN                        121.       226.        6.5     24.485       1.26
 MINIMUM                      24.         2.        0.9      6.650       0.27
 DATE OF MINIMUM       1986-11-17 1987-10-16 1986-11-17 1987-11-16 1986-11-17
 10TH PERCENTILE              28.         2.        1.0      8.524       0.28
 MEDIAN                       79.         8.        2.2     17.015       1.23
 90TH PERCENTILE             260.        84.        5.3     46.252       2.16
 MAXIMUM                     322.      3278.       65.5     83.690       3.06
 DATE OF MAXIMUM       1987-06-16 1987-05-15 1987-05-15 1987-05-15 1987-01-17
 STANDARD DEVIATION           91.       738.       14.5     18.044       0.76




 STATION - MY PHUOC TAY - PLAIN OF REEDS            STATION NO. 149009
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/29/38  LONG. 106/05/34  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-03-13 TO 1987-12-16

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         10         22         22         21
 MEAN                         43.       29.5       0.23       0.15        5.0
 MINIMUM                      15.       27.2       0.02       0.02        3.5
 DATE OF MINIMUM       1986-11-17 1986-11-17 1986-10-13 1987-06-16 1986-12-16
 10TH PERCENTILE              17.       27.2       0.02       0.02        3.8
 MEDIAN                       37.       29.3       0.12       0.09        4.8
 90TH PERCENTILE              63.       31.9       0.71       0.30        6.2
 MAXIMUM                     125.       32.0       0.80       0.95        7.1
 DATE OF MAXIMUM       1987-04-17 1987-10-16 1986-06-14 1986-05-13 1986-09-12
 STANDARD DEVIATION           25.        1.5       0.27       0.21        1.0




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         17         22         22         22
 MEAN                          4.       0.55        6.1         7.        32.
 MINIMUM                       0.       0.04        3.9         0.         7.
 DATE OF MINIMUM       1986-09-12 1987-07-15 1987-09-16 1986-03-13 1986-11-17
 10TH PERCENTILE               1.       0.20        4.3         0.         7.
 MEDIAN                        5.       0.57        6.5         0.        18.
 90TH PERCENTILE               7.       0.76        7.0        18.        51.
 MAXIMUM                       7.       1.01        7.1       108.       221.
 DATE OF MAXIMUM       1986-04-14 1986-03-13 1987-04-17 1987-12-16 1987-04-17
 STANDARD DEVIATION            2.       0.24        1.0        24.        47.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         21         22         22         21
 MEAN                         18.      0.607       4.16      0.008      0.073
 MINIMUM                       8.      0.005       2.15      0.000      0.013
 DATE OF MINIMUM       1986-12-16 1987-03-19 1987-04-17 1986-07-12 1986-07-12
 10TH PERCENTILE               9.      0.010       2.29      0.000      0.014
 MEDIAN                       18.      0.043       4.28      0.006      0.040
 90TH PERCENTILE              27.      2.705       5.41      0.012      0.083
 MAXIMUM                      31.      5.098       6.07      0.036      0.529
 DATE OF MAXIMUM       1987-06-16 1987-09-16 1986-06-14 1987-05-15 1987-10-16
 STANDARD DEVIATION            7.      1.479       1.06      0.009      0.114




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         22         22         22
 MEAN                        135.        33.        4.0     24.105       2.06
 MINIMUM                      33.         3.        1.5      7.900       0.11
 DATE OF MINIMUM       1986-12-16 1986-11-17 1986-11-17 1986-11-17 1987-09-16
 10TH PERCENTILE              38.         5.        1.6      9.760       0.19
 MEDIAN                      129.        10.        3.2     23.005       1.75
 90TH PERCENTILE             222.        42.        7.9     34.618       3.63
 MAXIMUM                     268.       292.        9.8     42.140       5.90
 DATE OF MAXIMUM       1987-09-16 1987-04-17 1987-04-17 1987-09-16 1986-08-14
 STANDARD DEVIATION           67.        68.        2.3      9.598       1.42




 STATION - KIEN BINH - PLAIN OF REEDS               STATION NO. 149010
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/36/33  LONG. 106/02/22  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-03-13 TO 1987-12-16

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         11         22         22         21
 MEAN                         42.       29.8       0.19       0.11        5.7
 MINIMUM                       9.       27.6       0.01       0.01        3.9
 DATE OF MINIMUM       1986-11-17 1987-09-16 1987-10-16 1986-10-13 1987-02-13
 10TH PERCENTILE              12.       27.6       0.01       0.02        4.0
 MEDIAN                       24.       29.0       0.14       0.11        5.8
 90TH PERCENTILE              91.       32.2       0.52       0.19        6.6
 MAXIMUM                     196.       32.5       0.69       0.56        8.9
 DATE OF MAXIMUM       1987-05-15 1987-10-16 1986-06-14 1987-06-16 1986-07-12
 STANDARD DEVIATION           46.        1.8       0.21       0.12        1.1




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         13         22         22         22
 MEAN                          3.       0.44        5.6         2.        33.
 MINIMUM                       1.       0.03        3.5         0.         3.
 DATE OF MINIMUM       1987-07-15 1986-09-12 1987-06-16 1986-03-13 1986-11-17
 10TH PERCENTILE               1.       0.05        3.6         0.         4.
 MEDIAN                        2.       0.48        6.2         0.         9.
 90TH PERCENTILE               4.       0.74        7.0         7.        30.
 MAXIMUM                      17.       1.13        7.5        32.       285.
 DATE OF MAXIMUM       1987-06-16 1987-04-17 1986-06-14 1987-12-16 1987-05-15
 STANDARD DEVIATION            3.       0.31        1.3         7.        75.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         21         22         22         21
 MEAN                         15.      2.492       3.92      0.006      0.055
 MINIMUM                       3.      0.010       1.87      0.000      0.002
 DATE OF MINIMUM       1986-12-16 1986-11-17 1986-10-13 1986-05-13 1987-06-16
 10TH PERCENTILE               4.      0.010       2.00      0.000      0.005
 MEDIAN                        8.      0.066       3.61      0.002      0.025
 90TH PERCENTILE              28.      5.797       4.95      0.016      0.094
 MAXIMUM                      67.     29.420       9.99      0.026      0.321
 DATE OF MAXIMUM       1987-05-15 1987-06-16 1987-06-16 1987-05-15 1987-07-15
 STANDARD DEVIATION           15.      6.514       1.70      0.007      0.083




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         22         22         22
 MEAN                        116.        49.        3.1     23.826       1.67
 MINIMUM                      21.         2.        0.8      7.230       0.35
 DATE OF MINIMUM       1986-12-16 1986-11-17 1986-11-17 1987-11-16 1987-06-16
 10TH PERCENTILE              29.         2.        1.0      8.560       0.63
 MEDIAN                       75.         5.        2.3     19.130       1.08
 90TH PERCENTILE             191.        29.        5.3     38.774       2.84
 MAXIMUM                     501.       536.       14.2     66.110       5.76
 DATE OF MAXIMUM       1987-06-16 1987-05-15 1987-05-15 1987-06-16 1986-06-14
 STANDARD DEVIATION          107.       137.        3.1     14.309       1.21




 STATION - MY AN - PLAIN OF REEDS                   STATION NO. 149011
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/31/14  LONG. 105/50/14  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-03-13 TO 1987-12-16

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22          9         22         22         21
 MEAN                         26.       29.7       0.29       0.12        4.9
 MINIMUM                       9.       28.2       0.00       0.00        2.7
 DATE OF MINIMUM       1986-11-17 1986-11-17 1986-08-14 1986-08-14 1986-12-16
 10TH PERCENTILE              10.                  0.01       0.01        3.8
 MEDIAN                       22.       29.2       0.15       0.04        5.1
 90TH PERCENTILE              39.                  0.71       0.23        6.0
 MAXIMUM                      87.       32.2       1.47       0.76        6.7
 DATE OF MAXIMUM       1987-06-16 1987-10-16 1986-05-13 1986-05-13 1986-07-12
 STANDARD DEVIATION           17.        1.4       0.37       0.18        1.0




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       20         20         22         22         21
 MEAN                          4.       0.67        6.6         6.        10.
 MINIMUM                       0.       0.03        3.6         0.         3.
 DATE OF MINIMUM       1987-06-16 1987-09-16 1987-06-16 1986-03-13 1986-10-13
 10TH PERCENTILE               1.       0.11        5.2         0.         3.
 MEDIAN                        4.       0.62        6.9         0.         9.
 90TH PERCENTILE               6.       1.08        7.3         9.        17.
 MAXIMUM                       9.       1.17        8.0        86.        22.
 DATE OF MAXIMUM       1987-03-19 1987-04-17 1986-06-14 1987-12-16 1987-05-15
 STANDARD DEVIATION            2.       0.37        0.9        19.         6.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         19         21         22         19
 MEAN                          9.      1.392       4.14      0.011      0.093
 MINIMUM                       3.      0.002       2.25      0.000      0.009
 DATE OF MINIMUM       1986-10-13 1987-03-19 1987-10-16 1986-08-14 1987-08-15
 10TH PERCENTILE               3.      0.009       2.55      0.000      0.014
 MEDIAN                        7.      0.047       3.95      0.007      0.053
 90TH PERCENTILE              17.      0.207       5.23      0.024      0.146
 MAXIMUM                      33.     24.950       9.57      0.052      0.712
 DATE OF MAXIMUM       1987-06-16 1987-06-16 1987-06-16 1987-05-15 1987-10-16
 STANDARD DEVIATION            7.      5.707       1.51      0.013      0.155




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         22         21         21         22
 MEAN                         81.         8.        2.9     22.438       2.15
 MINIMUM                      15.         2.        0.9      7.700       0.00
 DATE OF MINIMUM       1986-12-16 1986-10-13 1986-11-17 1987-11-16 1986-08-14
 10TH PERCENTILE              16.         2.        0.9      8.432       0.40
 MEDIAN                       44.         7.        2.7     18.520       1.76
 90TH PERCENTILE             166.        14.        4.4     36.378       3.90
 MAXIMUM                     460.        24.        8.2     64.370       4.63
 DATE OF MAXIMUM       1987-06-16 1986-06-14 1986-06-14 1987-06-16 1986-06-14
 STANDARD DEVIATION          102.         5.        1.7     13.817       1.37




 STATION - HUNG THANH - PLAIN OF REEDS              STATION NO. 149012
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/39/31  LONG. 105/45/19  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-03-13 TO 1987-12-16

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         10         22         22         19
 MEAN                         27.       29.2       0.31       0.10        5.7
 MINIMUM                      10.       27.9       0.01       0.01        3.9
 DATE OF MINIMUM       1986-11-17 1987-01-17 1986-09-12 1987-10-16 1987-06-16
 10TH PERCENTILE              11.       27.9       0.01       0.01        4.3
 MEDIAN                       18.       28.6       0.12       0.05        5.7
 90TH PERCENTILE              36.       31.5       0.48       0.16        6.6
 MAXIMUM                     154.       31.7       3.23       0.74        7.8
 DATE OF MAXIMUM       1987-06-16 1987-10-16 1986-06-14 1987-06-16 1986-08-14
 STANDARD DEVIATION           32.        1.4       0.68       0.15        1.0




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         17         22         22         22
 MEAN                          3.       0.65        6.4         1.         7.
 MINIMUM                       0.       0.10        3.0         0.         3.
 DATE OF MINIMUM       1986-05-13 1987-12-16 1987-06-16 1986-03-13 1987-10-16
 10TH PERCENTILE               1.       0.17        3.6         0.         3.
 MEDIAN                        3.       0.49        6.8         0.         6.
 90TH PERCENTILE               4.       1.13        7.5         3.        11.
 MAXIMUM                       5.       1.27        7.8        14.        24.
 DATE OF MAXIMUM       1986-04-14 1987-04-17 1986-06-14 1987-11-16 1987-06-16
 STANDARD DEVIATION            1.       0.37        1.3         4.         5.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         21         22         22         21
 MEAN                          8.      4.160       4.54      0.023      0.043
 MINIMUM                       3.      0.010       2.83      0.000      0.005
 DATE OF MINIMUM       1986-10-13 1986-09-12 1987-11-16 1986-05-13 1986-10-13
 10TH PERCENTILE               3.      0.010       2.89      0.000      0.006
 MEDIAN                        5.      0.052       4.11      0.003      0.024
 90TH PERCENTILE               8.      5.238       5.12      0.028      0.099
 MAXIMUM                      57.     64.620      13.54      0.372      0.114
 DATE OF MAXIMUM       1987-06-16 1987-06-16 1987-06-16 1986-06-14 1987-03-19
 STANDARD DEVIATION           12.     14.316       2.33      0.078      0.036




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         22         22         22
 MEAN                         92.         7.        2.1     21.683       2.90
 MINIMUM                      11.         2.        0.9      7.920       0.58
 DATE OF MINIMUM       1986-07-12 1986-10-13 1987-11-16 1987-11-16 1986-11-17
 10TH PERCENTILE              17.         2.        1.0     10.500       0.62
 MEDIAN                       34.         4.        1.8     16.895       1.80
 90TH PERCENTILE             149.        13.        3.8     34.206       4.45
 MAXIMUM                     840.        45.        6.0     81.740      20.00
 DATE OF MAXIMUM       1987-06-16 1986-06-14 1986-05-13 1987-06-16 1986-06-14
 STANDARD DEVIATION          181.         9.        1.4     17.167       4.05




 STATION - CAI MON - PLAIN OF REEDS                 STATION NO. 149013
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/49/19  LONG. 105/44/43  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-03-13 TO 1987-12-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22          8         22         22         21
 MEAN                         15.       28.7       0.23       0.06        5.8
 MINIMUM                       6.       26.2       0.01       0.01        2.9
 DATE OF MINIMUM       1987-11-15 1987-01-17 1986-09-12 1987-07-15 1987-11-15
 10TH PERCENTILE               8.                  0.02       0.02        4.1
 MEDIAN                       15.       28.1       0.19       0.04        6.2
 90TH PERCENTILE              21.                  0.50       0.06        6.7
 MAXIMUM                      35.       31.7       0.70       0.34        7.1
 DATE OF MAXIMUM       1986-05-13 1987-10-15 1986-06-14 1986-03-13 1986-08-14
 STANDARD DEVIATION            7.        2.0       0.20       0.07        1.0




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         22         22         22         22
 MEAN                          4.       0.84        7.1        14.         7.
 MINIMUM                       1.       0.40        6.4         0.         3.
 DATE OF MINIMUM       1987-06-16 1986-05-13 1986-05-13 1986-03-13 1987-11-15
 10TH PERCENTILE               3.       0.47        6.5         0.         3.
 MEDIAN                        4.       0.90        7.2         0.         5.
 90TH PERCENTILE               5.       1.15        7.5        58.        12.
 MAXIMUM                       7.       1.34        7.8       134.        13.
 DATE OF MAXIMUM       1987-08-15 1987-05-15 1986-06-14 1987-12-15 1987-05-15
 STANDARD DEVIATION            1.       0.27        0.3        34.         4.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         18         22         22         21
 MEAN                          5.      0.045       4.17      0.021      0.090
 MINIMUM                       2.      0.009       2.89      0.000      0.008
 DATE OF MINIMUM       1986-12-16 1987-01-17 1987-11-15 1986-05-13 1986-05-13
 10TH PERCENTILE               3.      0.010       3.07      0.000      0.026
 MEDIAN                        4.      0.035       4.10      0.007      0.066
 90TH PERCENTILE               6.      0.082       4.94      0.054      0.110
 MAXIMUM                      12.      0.135       5.94      0.134      0.430
 DATE OF MAXIMUM       1986-05-13 1987-09-15 1986-05-13 1986-06-14 1986-03-13
 STANDARD DEVIATION            2.      0.036       0.72      0.031      0.093




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         22         22         22
 MEAN                         22.         6.        2.5     15.079       3.75
 MINIMUM                       3.         2.        1.0      4.590       0.54
 DATE OF MINIMUM       1987-11-15 1986-10-13 1986-10-13 1987-11-15 1986-05-13
 10TH PERCENTILE               6.         2.        1.1      8.372       1.08
 MEDIAN                       14.         4.        1.7     14.140       3.55
 90TH PERCENTILE              37.        12.        3.8     20.984       6.36
 MAXIMUM                     119.        17.       10.6     33.430       8.93
 DATE OF MAXIMUM       1986-05-13 1986-06-14 1986-06-14 1986-05-13 1986-03-13
 STANDARD DEVIATION           25.         4.        2.2      6.216       2.13




 STATION - TAN THANH - PLAIN OF REEDS               STATION NO. 149014
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/48/58  LONG. 105/35/25  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-03-13 TO 1987-12-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22          9         22         22         21
 MEAN                         15.       28.8       0.22       0.07        6.2
 MINIMUM                       6.       26.6       0.01       0.01        4.3
 DATE OF MINIMUM       1987-11-15 1987-01-17 1986-09-12 1987-07-15 1986-12-16
 10TH PERCENTILE               8.                  0.02       0.02        4.9
 MEDIAN                       13.       28.5       0.16       0.06        6.3
 90TH PERCENTILE              23.                  0.50       0.11        7.1
 MAXIMUM                      36.       31.6       0.72       0.22        7.2
 DATE OF MAXIMUM       1986-05-13 1987-10-15 1986-05-13 1986-04-14 1987-02-13
 STANDARD DEVIATION            7.        1.9       0.21       0.05        0.8




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         22         22         22         22
 MEAN                          4.       0.86        7.2        15.         6.
 MINIMUM                       1.       0.35        6.3         0.         2.
 DATE OF MINIMUM       1986-05-13 1986-05-13 1986-05-13 1986-03-13 1987-10-15
 10TH PERCENTILE               1.       0.43        6.8         0.         2.
 MEDIAN                        4.       0.89        7.3         0.         5.
 90TH PERCENTILE               5.       1.19        7.5        46.        12.
 MAXIMUM                       5.       1.29        7.7       196.        13.
 DATE OF MAXIMUM       1987-05-15 1987-04-17 1987-03-19 1987-12-15 1987-05-15
 STANDARD DEVIATION            1.       0.26        0.3        44.         4.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         20         22         22         21
 MEAN                          5.      0.028       4.20      0.018      0.067
 MINIMUM                       2.      0.008       2.58      0.000      0.010
 DATE OF MINIMUM       1986-11-17 1987-01-17 1987-11-15 1986-05-13 1986-05-13
 10TH PERCENTILE               3.      0.010       3.09      0.000      0.022
 MEDIAN                        4.      0.021       4.28      0.006      0.054
 90TH PERCENTILE               7.      0.064       5.03      0.047      0.094
 MAXIMUM                      12.      0.070       5.90      0.079      0.333
 DATE OF MAXIMUM       1986-05-13 1986-11-17 1986-05-13 1987-12-15 1986-03-13
 STANDARD DEVIATION            2.      0.021       0.81      0.023      0.066





                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         22         22         22
 MEAN                         23.         5.        2.2     15.454       3.40
 MINIMUM                       4.         2.        1.0      4.630       0.17
 DATE OF MINIMUM       1986-10-13 1986-11-17 1986-10-13 1987-11-15 1987-06-16
 10TH PERCENTILE               4.         2.        1.1      8.152       0.81
 MEDIAN                       11.         4.        1.8     14.110       3.55
 90TH PERCENTILE              57.        11.        3.5     22.996       6.06
 MAXIMUM                     124.        11.        5.8     33.970       7.37
 DATE OF MAXIMUM       1986-05-13 1986-06-14 1986-06-14 1986-05-13 1987-05-15
 STANDARD DEVIATION           28.         3.        1.3      6.597       2.04




 STATION - TAN THANH - PLAIN OF REEDS               STATION NO. 149015
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/51/00  LONG. 105/34/00  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-10-13 TO 1987-05-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8          6          8          8          8
 MEAN                         14.       28.5       0.19       0.04        5.1
 MINIMUM                       8.       26.4       0.03       0.02        3.1
 DATE OF MINIMUM       1986-10-13 1987-01-17 1986-10-13 1986-11-17 1986-10-13
 10TH PERCENTILE                                                             
 MEDIAN                       14.       28.2       0.19       0.03        5.6
 90TH PERCENTILE                                                             
 MAXIMUM                      21.       31.4       0.34       0.08        6.2
 DATE OF MAXIMUM       1987-05-15 1987-05-15 1987-05-15 1987-05-15 1987-04-17
 STANDARD DEVIATION            5.        2.0       0.11       0.02        1.2




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8          8          8          8          8
 MEAN                          4.       0.95        7.2         0.         7.
 MINIMUM                       3.       0.65        6.8         0.         3.
 DATE OF MINIMUM       1987-04-17 1986-11-17 1986-10-13 1986-10-13 1986-10-13
 10TH PERCENTILE                                                             
 MEDIAN                        4.       0.95        7.1         0.         6.
 90TH PERCENTILE                                                             
 MAXIMUM                       5.       1.30        7.7         0.        13.
 DATE OF MAXIMUM       1987-02-13 1987-05-15 1987-04-17 1987-05-15 1987-05-15
 STANDARD DEVIATION            1.       0.26        0.3         0.         4.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8          8          8          8          8
 MEAN                          4.      0.031       4.01      0.012      0.067
 MINIMUM                       1.      0.003       3.23      0.003      0.036
 DATE OF MINIMUM       1986-12-16 1987-03-19 1986-11-17 1987-04-17 1986-11-17
 10TH PERCENTILE                                                             
 MEDIAN                        4.      0.019       4.14      0.010      0.064
 90TH PERCENTILE                                                             
 MAXIMUM                       7.      0.110       4.48      0.027      0.110
 DATE OF MAXIMUM       1987-05-15 1986-11-17 1987-05-15 1987-05-15 1987-02-13
 STANDARD DEVIATION            2.      0.035       0.43      0.008      0.028




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8          8          8          8          8
 MEAN                         12.         5.        2.4     13.855       3.35
 MINIMUM                       4.         2.        1.1      8.840       1.40
 DATE OF MINIMUM       1986-10-13 1986-10-13 1986-10-13 1986-10-13 1986-12-16
 10TH PERCENTILE                                                             
 MEDIAN                        9.         3.        1.9     12.605       3.26
 90TH PERCENTILE                                                             
 MAXIMUM                      26.        11.        4.9     19.940       6.49
 DATE OF MAXIMUM       1987-05-15 1987-05-15 1987-04-17 1987-04-17 1987-04-17
 STANDARD DEVIATION            9.         3.        1.3      4.298       1.67




 STATION - TRAM CHIM(H.BINH)-PL.OF REEDS            STATION NO. 149016
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/41/00  LONG. 105/34/00  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-10-13 TO 1987-05-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8          7          8          8          8
 MEAN                         15.       28.1       0.12       0.07        5.4
 MINIMUM                       9.       26.0       0.01       0.01        2.9
 DATE OF MINIMUM       1986-10-13 1987-01-17 1986-11-17 1986-10-13 1986-12-16
 10TH PERCENTILE                                                             
 MEDIAN                       16.       27.8       0.06       0.05        5.8
 90TH PERCENTILE                                                             
 MAXIMUM                      22.       31.2       0.34       0.18        7.0
 DATE OF MAXIMUM       1987-05-15 1987-05-15 1987-05-15 1987-02-13 1987-02-13
 STANDARD DEVIATION            5.        1.9       0.13       0.05        1.5




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8          8          8          8          8
 MEAN                          3.       0.92        7.2         0.         6.
 MINIMUM                       2.       0.69        6.6         0.         3.
 DATE OF MINIMUM       1986-11-17 1986-11-17 1986-12-16 1986-10-13 1986-10-13
 10TH PERCENTILE                                                             
 MEDIAN                        3.       0.86        7.1         0.         6.
 90TH PERCENTILE                                                             
 MAXIMUM                       6.       1.30        7.8         0.        11.
 DATE OF MAXIMUM       1987-05-15 1987-04-17 1987-04-17 1987-05-15 1987-05-15
 STANDARD DEVIATION            1.       0.23        0.4         0.         3.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8          6          8          8          8
 MEAN                          4.      0.031       3.77      0.006      0.045
 MINIMUM                       3.      0.009       2.69      0.000      0.004
 DATE OF MINIMUM       1986-10-13 1987-01-17 1987-03-19 1986-11-17 1986-11-17
 10TH PERCENTILE                                                             
 MEDIAN                        4.      0.020       3.56      0.002      0.036
 90TH PERCENTILE                                                             
 MAXIMUM                       6.      0.072       5.11      0.041      0.124
 DATE OF MAXIMUM       1987-05-15 1987-04-17 1987-05-15 1987-05-15 1987-03-19
 STANDARD DEVIATION            1.      0.025       0.76      0.014      0.041




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8          8          8          8          8
 MEAN                         20.         5.        1.8     16.034       2.11
 MINIMUM                       6.         2.        1.1     10.980       0.26
 DATE OF MINIMUM       1986-10-13 1986-11-17 1986-10-13 1986-11-17 1986-11-17
 10TH PERCENTILE                                                             
 MEDIAN                       19.         4.        1.8     15.450       2.38
 90TH PERCENTILE                                                             
 MAXIMUM                      36.        11.        2.7     21.980       3.63
 DATE OF MAXIMUM       1987-05-15 1987-05-15 1987-05-15 1987-05-15 1987-05-15
 STANDARD DEVIATION           10.         4.        0.6      4.092       1.20




 STATION - TRAM CHIM - PLAIN OF REEDS               STATION NO. 149017
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/40/20  LONG. 105/32/52  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-03-13 TO 1987-12-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         10         22         22         21
 MEAN                         18.       28.9       0.19       0.05        5.9
 MINIMUM                       8.       26.6       0.01       0.00        2.6
 DATE OF MINIMUM       1987-07-15 1987-01-17 1986-09-12 1987-06-16 1986-12-16
 10TH PERCENTILE               9.       26.6       0.02       0.00        4.4
 MEDIAN                       15.       28.3       0.11       0.04        5.9
 90TH PERCENTILE              23.       31.0       0.36       0.07        7.2
 MAXIMUM                      70.       33.2       0.70       0.25        7.9
 DATE OF MAXIMUM       1986-05-13 1987-10-15 1986-04-14 1986-04-14 1986-09-12
 STANDARD DEVIATION           13.        2.1       0.20       0.05        1.2




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         21         22         22         22
 MEAN                          3.       0.83        7.1         2.         6.
 MINIMUM                       0.       0.07        3.6         0.         2.
 DATE OF MINIMUM       1986-05-13 1987-10-15 1986-05-13 1986-03-13 1987-10-15
 10TH PERCENTILE               1.       0.32        6.6         0.         3.
 MEDIAN                        3.       0.86        7.3         0.         5.
 90TH PERCENTILE               4.       1.18        7.5         2.        11.
 MAXIMUM                       4.       1.30        8.2        38.        13.
 DATE OF MAXIMUM       1986-08-14 1987-04-17 1986-06-14 1987-12-15 1986-05-13
 STANDARD DEVIATION            1.       0.32        0.8         8.         3.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         19         22         22         21
 MEAN                          5.      0.820       4.05      0.018      0.055
 MINIMUM                       2.      0.010       1.89      0.000      0.008
 DATE OF MINIMUM       1986-12-16 1986-08-14 1987-10-15 1986-05-13 1986-10-13
 10TH PERCENTILE               2.      0.010       2.77      0.000      0.011
 MEDIAN                        4.      0.042       4.00      0.005      0.047
 90TH PERCENTILE               8.      0.100       4.72      0.031      0.111
 MAXIMUM                      18.     14.800       7.23      0.209      0.146
 DATE OF MAXIMUM       1986-05-13 1986-05-13 1986-05-13 1986-06-14 1987-10-15
 STANDARD DEVIATION            4.      3.386       1.02      0.044      0.039




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         21         22         22
 MEAN                         36.         5.        1.9     17.752       2.17
 MINIMUM                       5.         2.        1.0      7.940       0.03
 DATE OF MINIMUM       1986-10-13 1986-10-13 1986-10-13 1987-11-15 1986-05-13
 10TH PERCENTILE               6.         2.        1.2      9.180       0.62
 MEDIAN                       17.         4.        1.6     14.520       2.34
 90TH PERCENTILE              52.        11.        2.3     23.082       3.41
 MAXIMUM                     306.        12.        6.4     56.890       5.31
 DATE OF MAXIMUM       1986-05-13 1987-06-16 1986-05-13 1986-05-13 1986-08-14
 STANDARD DEVIATION           64.         3.        1.2     10.002       1.32




 STATION - PHONG MY - PLAIN OF REEDS                STATION NO. 149018
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/31/22  LONG. 105/33/53  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-03-13 TO 1987-12-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         11         22         22         21
 MEAN                         14.       29.7       0.16       0.07        6.3
 MINIMUM                       7.       27.2       0.01       0.01        4.2
 DATE OF MINIMUM       1987-07-15 1987-02-13 1987-05-15 1987-07-15 1987-10-15
 10TH PERCENTILE               9.       27.3       0.02       0.02        4.7
 MEDIAN                       14.       28.4       0.12       0.04        6.3
 90TH PERCENTILE              20.       32.3       0.29       0.10        7.5
 MAXIMUM                      22.       32.4       0.60       0.67        9.3
 DATE OF MAXIMUM       1987-06-16 1987-10-15 1986-06-14 1986-05-13 1987-03-19
 STANDARD DEVIATION            4.        2.0       0.15       0.14        1.2




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         22         22         22         22
 MEAN                          3.       1.06        7.5        16.         6.
 MINIMUM                       1.       0.56        6.7         0.         3.
 DATE OF MINIMUM       1987-04-17 1987-07-15 1987-11-15 1986-03-13 1986-08-14
 10TH PERCENTILE               1.       0.73        7.0         0.         3.
 MEDIAN                        3.       0.96        7.4         0.         5.
 90TH PERCENTILE               4.       1.43        8.2        42.        10.
 MAXIMUM                      12.       1.56        8.8       206.        11.
 DATE OF MAXIMUM       1986-08-14 1987-05-15 1987-03-19 1987-09-15 1987-06-16
 STANDARD DEVIATION            2.       0.29        0.5        46.         3.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         18         22         22         21
 MEAN                          4.      0.028       4.23      0.015      0.085
 MINIMUM                       2.      0.001       2.51      0.000      0.018
 DATE OF MINIMUM       1986-09-12 1987-08-15 1987-03-19 1987-01-17 1986-10-13
 10TH PERCENTILE               2.      0.007       3.04      0.003      0.018
 MEDIAN                        4.      0.028       4.18      0.010      0.060
 90TH PERCENTILE               6.      0.049       5.29      0.026      0.150
 MAXIMUM                       7.      0.073       6.45      0.088      0.401
 DATE OF MAXIMUM       1987-06-16 1987-04-17 1987-12-15 1986-06-14 1986-08-14
 STANDARD DEVIATION            2.      0.018       0.90      0.018      0.085





                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         22         22         22
 MEAN                         11.         5.        1.5     15.699       2.48
 MINIMUM                       3.         2.        1.1      7.174       0.20
 DATE OF MINIMUM       1986-09-12 1986-10-13 1986-11-17 1987-07-15 1987-08-15
 10TH PERCENTILE               5.         2.        1.1      9.026       0.57
 MEDIAN                        9.         4.        1.5     14.529       2.02
 90TH PERCENTILE              18.         9.        1.9     21.828       4.82
 MAXIMUM                      24.        12.        2.3     23.026       8.82
 DATE OF MAXIMUM       1987-06-16 1987-06-16 1986-06-14 1987-06-16 1986-09-12
 STANDARD DEVIATION            6.         3.        0.3      4.654       1.97




 STATION - AN LONG - PLAIN OF REEDS                 STATION NO. 149019
 COUNTRY - VIETNAM                                  DEPTH(M)       0.0
 LOCATION - OCT. 2  LAT. 10/41/35  LONG. 105/23/33  ELEVATION(M)   0.0
 REGIONAL CENTRE - SEAA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1985-01-01 TO 1987-12-31
 PERIOD OF RECORD FROM  - 1986-03-13 TO 1987-12-15

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07555      08101
                            us/cm      deg C     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         11         22         22         20
 MEAN                         38.       29.7       0.19       0.09        6.4
 MINIMUM                       8.       27.6       0.02       0.01        4.6
 DATE OF MINIMUM       1987-07-15 1987-02-13 1986-10-13 1987-07-15 1987-06-16
 10TH PERCENTILE               9.       27.6       0.03       0.02        4.9
 MEDIAN                       14.       29.0       0.15       0.04        6.4
 90TH PERCENTILE              21.       32.0       0.28       0.07        7.4
 MAXIMUM                     536.       32.9       1.13       1.21        8.7
 DATE OF MAXIMUM       1987-09-15 1987-05-15 1986-06-14 1987-09-15 1987-03-19
 STANDARD DEVIATION          111.        1.9       0.24       0.25        1.1




                              COD        ALK         pH   SUSP SOL         Na
                                       TOTAL               105 DEG       DISS
                            08301      10121      10301      10401      11103
                          mg/L O2      MEQ/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         22         22         22         22
 MEAN                          4.       1.08        7.6        27.        49.
 MINIMUM                       1.       0.57        7.0         0.         3.
 DATE OF MINIMUM       1987-05-15 1987-07-15 1987-12-15 1986-03-13 1987-10-15
 10TH PERCENTILE               1.       0.75        7.1         0.         3.
 MEDIAN                        3.       1.03        7.6         0.         5.
 90TH PERCENTILE               6.       1.49        8.1       136.        11.
 MAXIMUM                      10.       1.56        8.6       171.       958.
 DATE OF MAXIMUM       1986-08-14 1987-05-15 1987-03-19 1987-09-15 1987-09-15
 STANDARD DEVIATION            2.       0.28        0.4        59.       203.




                               Mg         Al         Si      PO4-P          P
                            TOTAL       DISS   REACTIVE        SOL      TOTAL
                            12003      13102      14101      15254      15405
                          mg/L Mg    mg/L Al   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         18         22         22         20
 MEAN                         10.      0.033       4.26      0.017      0.097
 MINIMUM                       2.      0.008       3.11      0.000      0.037
 DATE OF MINIMUM       1987-07-15 1987-01-17 1987-03-19 1987-01-17 1987-05-15
 10TH PERCENTILE               2.      0.009       3.27      0.000      0.040
 MEDIAN                        4.      0.037       4.29      0.012      0.076
 90TH PERCENTILE               7.      0.060       5.18      0.039      0.146
 MAXIMUM                     135.      0.060       5.33      0.072      0.319
 DATE OF MAXIMUM       1987-09-15 1986-11-17 1986-05-13 1986-06-14 1986-08-14
 STANDARD DEVIATION           28.      0.020       0.64      0.018      0.073




                         SULPHATE         Cl          K         Ca         Fe
                                        DISS       DISS       DISS      TOTAL
                            16303      17201      19103      20101      26002
                         mg/L SO4    mg/L Cl     mg/L K    mg/L Ca    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         22         22         22         22
 MEAN                         24.        80.        3.6     16.021       3.21
 MINIMUM                       1.         2.        1.1      7.816       0.97
 DATE OF MINIMUM       1987-11-15 1986-08-14 1987-05-15 1987-11-15 1987-05-15
 10TH PERCENTILE               4.         2.        1.1      8.950       1.27
 MEDIAN                        8.         4.        1.5     14.830       2.97
 90TH PERCENTILE              17.        11.        2.4     22.397       5.03
 MAXIMUM                     315.      1637.       45.1     23.627       6.65
 DATE OF MAXIMUM       1987-09-15 1987-09-15 1987-09-15 1986-05-13 1987-09-15
 STANDARD DEVIATION           65.       348.        9.3      4.711       1.59


NOTE:  Data identified here were received from the Mekong Secretariat.  
For further information please contact GEMS/Water (GEMS@cciw.ca).






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Last updated: 2002-06-26