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STATISTICS for Argentina

STATISTICS FOR ARGENTINA


GEMS/WATER - STATISTICAL SUMMARY BY STATION     2002-01-24   PAGE   1

 STATION - RIO PARANA PUERTO LIBERTAD               STATION NO. 001001
 COUNTRY - ARGENTINA                                DEPTH(M)       8.9
 LOCATION - OCT. 5  LAT. 25/55/00  LONG. 054/36/00  ELEVATION(M) 260.0
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1993-09-21 TO 1993-09-21

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      TRANS    PHENOLS     NO3NO2
                             COND                                            
                            02041      02062      02076      06532      07105
                            us/cm      deg C          m       mg/L     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          1          1          1          1
 MEAN                         46.       21.6        1.2      4.000       0.19
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                              NH3         O2        ALK         pH   SUSP SOL
                                        DISS      TOTAL               105 DEG
                            07506      08101      10101      10301      10401
                           mg/L N    mg/L O2       mg/L   pH UNITS       mg/L


 NO. OF L-FLAGGED VALUES        1          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          1          1          1          1
 MEAN                        0.01       10.2      15.00        7.0         3.
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                                P         Cl     ALDRIN   DIELDRIN         Cr
                            TOTAL       DISS                            TOTAL
                            15405      17202      18130      18150      24002
                           mg/L P    mg/L Cl       ug/L       ug/L    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          1          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          1          0          0          1
 MEAN                       0.178         3.      0.200      0.200      0.005
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          



                               Fe         Cu         Zn         Zn         As
                            TOTAL      TOTAL      TOTAL       DISS      TOTAL
                            26002      29006      30004      30104      33007
                          mg/L Fe    mg/L Cu    mg/L Zn    mg/L Zn    mg/L As


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          1          1          1          0
 MEAN                        0.34      0.006      0.040      0.040      0.010
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               As   COLIFORM   FAEC COL         Cd         Cd
                             DISS      TOTAL                 TOTAL       DISS
                            33103      36001      36011      48001      48101
                          mg/L As   No/100ml   No/100ml    mg/L Cd    mg/L Cd


 NO. OF L-FLAGGED VALUES        1          0          0          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          1          1          0          0
 MEAN                       0.010      4600.       930.      0.001      0.001
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               Ba         Hg         Pb         Pb       INST
                            TOTAL       DISS      TOTAL       DISS     DISCHG
                            80011      80111      82001      82101      97160
                          ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES        1          1          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          1          1          1
 MEAN                       2.000      2.000      0.003      0.003    13141.0
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          





 STATION - RIO PARANA CORRIENTES                    STATION NO. 001002
 COUNTRY - ARGENTINA                                DEPTH(M)       2.4
 LOCATION - OCT. 5  LAT. 27/40/00  LONG. 058/50/00  ELEVATION(M)  69.0
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-03-08 TO 1993-12-14

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP       TEMP     NO3NO2      NO2-N
                             COND                                            
                            02041      02061      02062      07105      07207
                            us/cm      deg C      deg C     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0         22
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       41         40          1         18          0
 MEAN                         33.       21.8       25.0       0.20       0.01
 MINIMUM                       7.       12.0                  0.10       0.00
 DATE OF MINIMUM       1992-01-23 1992-07-23            1992-05-13 1991-03-08
 10TH PERCENTILE              23.       14.0                  0.10       0.01
 MEDIAN                       32.       22.0                  0.18       0.00
 90TH PERCENTILE              41.       28.0                  0.30       0.00
 MAXIMUM                      65.       29.0                  0.43       0.00
 DATE OF MAXIMUM       1991-03-08 1992-01-23            1992-06-17 1992-01-23
 STANDARD DEVIATION            9.        4.7                  0.09       0.00




                            NO3-N        NH3        NH3        NH3         O2
                                                                         DISS
                            07309      07506      07551      07554      08102
                           mg/L N     mg/L N     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          1          3         35          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22          0          0          3         42
 MEAN                        0.15       0.05       0.05       0.22        8.1
 MINIMUM                     0.08                             0.05        6.3
 DATE OF MINIMUM       1991-03-20                       1991-03-08 1992-01-23
 10TH PERCENTILE             0.08                             0.05        7.0
 MEDIAN                      0.15                             0.05        8.1
 90TH PERCENTILE             0.20                             0.50        8.9
 MAXIMUM                     0.28                             0.50        9.7
 DATE OF MAXIMUM       1991-07-24                       1992-07-23 1992-07-23
 STANDARD DEVIATION          0.05                             0.21        0.8




                              ALK         pH   SUSP SOL         Na         Mg
                            TOTAL               105 DEG       DISS       DISS
                            10102      10302      10401      11103      12103
                             mg/L   pH UNITS       mg/L    mg/L Na    mg/L Mg


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       42         42          4         41         42
 MEAN                       20.12        7.2        50.         3.         2.
 MINIMUM                    17.00        6.8        38.         1.         2.
 DATE OF MINIMUM       1992-06-17 1992-04-09 1993-10-19 1992-07-02 1991-05-28
 10TH PERCENTILE            18.00        7.0                    2.         2.
 MEDIAN                     20.00        7.1        48.         2.         2.
 90TH PERCENTILE            22.00        7.3                    3.         3.
 MAXIMUM                    31.00        8.0        67.         6.         3.
 DATE OF MAXIMUM       1992-01-23 1992-01-23 1993-06-09 1992-01-23 1992-01-23
 STANDARD DEVIATION          2.31        0.2        13.         1.         0.




                               Si    P ORTHO          P   SULPHATE         Cl
                         REACTIVE      TOTAL      TOTAL                  DISS
                            14101      15205      15405      16306      17201
                         mg/LSiO2     mg/L P     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        2         38          4         40         42
 MEAN                       12.70      0.066      0.034         2.         3.
 MINIMUM                               0.015      0.025         1.         1.
 DATE OF MINIMUM                  1991-05-09 1993-12-14 1991-05-28 1991-07-10
 10TH PERCENTILE                       0.020                    1.         3.
 MEDIAN                                0.032      0.030         2.         3.
 90TH PERCENTILE                       0.115                    4.         4.
 MAXIMUM                               0.520      0.050         7.         5.
 DATE OF MAXIMUM                  1992-01-23 1993-10-19 1992-01-23 1992-03-04
 STANDARD DEVIATION                    0.092      0.011         1.         1.




                                K         Ca         Cr         Mn         Fe
                             DISS       DISS      TOTAL      TOTAL      TOTAL
                            19103      20101      24002      25004      26004
                           mg/L K    mg/L Ca    mg/L Cr    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          2          3          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       41         42          0          0          2
 MEAN                         1.3      4.205      0.050       0.05       0.15
 MINIMUM                      0.6      2.400                                 
 DATE OF MINIMUM       1991-05-09 1991-09-25                                 
 10TH PERCENTILE              0.8      3.200                                 
 MEDIAN                       1.2      4.000                                 
 90TH PERCENTILE              2.0      4.800                                 
 MAXIMUM                      2.4      8.000                                 
 DATE OF MAXIMUM       1991-05-02 1992-01-23                                 
 STANDARD DEVIATION           0.4      1.095                                 




                               Ni         Cu         Zn   COLIFORM   FAEC COL
                            TOTAL      TOTAL      TOTAL      TOTAL           
                            28001      29006      30004      36001      36011
                          mg/L Ni    mg/L Cu    mg/L Zn   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        3          3          2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0         12         42
 MEAN                       0.087      0.060      0.050       975.       559.
 MINIMUM                                                      240.         0.
 DATE OF MINIMUM                                        1992-07-23 1991-05-02
 10TH PERCENTILE                                              240.        19.
 MEDIAN                                                      1500.       240.
 90TH PERCENTILE                                             1500.       790.
 MAXIMUM                                                     1500.      5500.
 DATE OF MAXIMUM                                        1992-10-21 1992-06-03
 STANDARD DEVIATION                                           649.      1075.



                               Cd         Pb       INST
                            TOTAL      TOTAL     DISCHG
                            48001      82001      97160
                          mg/L Cd    mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES        3          3          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        0          0         22
 MEAN                       0.027      0.167    25437.9
 MINIMUM                                        15981.0
 DATE OF MINIMUM                             1993-12-14
 10TH PERCENTILE                                17730.0
 MEDIAN                                         22641.0
 90TH PERCENTILE                                35963.4
 MAXIMUM                                        44110.0
 DATE OF MAXIMUM                             1992-06-17
 STANDARD DEVIATION                              7689.5





 STATION - RIO PARANA ROSARIO                       STATION NO. 001004
 COUNTRY - ARGENTINA                                DEPTH(M)       6.4
 LOCATION - OCT. 5  LAT. 32/50/00  LONG. 060/45/00  ELEVATION(M)  24.0
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1993-08-10 TO 1993-11-02

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP    PHENOLS        NH3         O2
                             COND                                        DISS
                            02041      02061      06532      07555      08102
                            us/cm      deg C       mg/L     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          2          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2          2          0          0          2
 MEAN                        206.       20.5      5.000       0.05        8.1
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                              BOD        COD         pH         Cl        DDT
                                                              DISS      TOTAL
                            08201      08301      10302      17204      18002
                          mg/L O2    mg/L O2   pH UNITS    mg/L Cl       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2          2          2          2          0
 MEAN                          1.         8.        7.2        30.      0.600
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                          LINDANE     ALDRIN   DIELDRIN         Cr         Fe
                                                             TOTAL      TOTAL
                            18070      18130      18150      24002      26002
                             ug/L       ug/L       ug/L    mg/L Cr    mg/L Fe


 NO. OF L-FLAGGED VALUES        2          2          2          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          1          1
 MEAN                       0.400      0.200      0.200      0.002       0.10
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          



                               Cu         Zn         As   COLIFORM   FAEC COL
                            TOTAL      TOTAL      TOTAL      TOTAL           
                            29006      30004      33003      36001      36011
                          mg/L Cu    mg/L Zn    mg/L As   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        0          1          2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2          1          0          2          2
 MEAN                       0.018      0.014      0.030      1415.       120.
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               Cd         Ba         Pb    BENZENE       INST
                            TOTAL      TOTAL      TOTAL                DISCHG
                            48001      80011      82001      95100      97160
                          mg/L Cd    ug/L Hg    mg/L Pb       ug/L       m3/S


 NO. OF L-FLAGGED VALUES        2          1          2          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          2
 MEAN                       0.001      2.000      0.004       10.0    18942.0
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          





 STATION - RIO DE LA PLATA BUENOS AIRES             STATION NO. 001005
 COUNTRY - ARGENTINA                                DEPTH(M)    9999.9
 LOCATION - OCT. 5  LAT. 34/30/00  LONG. 058/30/00  ELEVATION(M)   4.0
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1991-01-30 TO 1991-11-14

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      NO2-N        NH3        NH3
                             COND                                            
                            02041      02061      07207      07551      07555
                            us/cm      deg C     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0         17          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       17         17          0         12          0
 MEAN                        228.       19.2       0.01       0.16       0.05
 MINIMUM                     182.       10.0       0.01       0.05           
 DATE OF MINIMUM       1991-05-17 1991-07-17 1991-01-30 1991-05-02           
 10TH PERCENTILE             187.       11.4       0.01       0.06           
 MEDIAN                      226.       20.0       0.01       0.10           
 90TH PERCENTILE             262.       22.6       0.01       0.31           
 MAXIMUM                     307.       27.0       0.01       0.35           
 DATE OF MAXIMUM       1991-09-19 1991-01-30 1991-11-14 1991-06-25           
 STANDARD DEVIATION           31.        4.1       0.00       0.10           




                               O2        BOD        ALK         pH   SUSP SOL
                             DISS                 TOTAL               105 DEG
                            08101      08201      10102      10301      10401
                          mg/L O2    mg/L O2       mg/L   pH UNITS       mg/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         16         17         17         13
 MEAN                         8.4         2.      44.47        7.5        69.
 MINIMUM                      4.8         0.      35.00        6.8        48.
 DATE OF MINIMUM       1991-10-09 1991-05-17 1991-07-17 1991-05-17 1991-11-14
 10TH PERCENTILE              6.5         0.      35.70        7.2        52.
 MEDIAN                       9.0         1.      45.00        7.6        70.
 90TH PERCENTILE              9.4         2.      50.00        7.7        78.
 MAXIMUM                      9.6         8.      60.00        7.8        80.
 DATE OF MAXIMUM       1991-08-14 1991-09-19 1991-03-19 1991-10-29 1991-06-11
 STANDARD DEVIATION           1.2         2.       5.80        0.2         9.




                          P ORTHO         Cl   COLIFORM   FAEC COL         Ba
                             DISS       DISS      TOTAL                 TOTAL
                            15255      17204      36001      36011      80011
                           mg/L P    mg/L Cl   No/100ml   No/100ml    ug/L Hg


 NO. OF L-FLAGGED VALUES        7          0          0          0         16
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10         17          4          4          0
 MEAN                       0.041        30.      1490.       232.      0.944
 MINIMUM                    0.030        20.       230.        40.      0.100
 DATE OF MINIMUM       1991-07-17 1991-03-19 1991-10-09 1991-10-09 1991-07-31
 10TH PERCENTILE            0.030        24.                            0.640
 MEDIAN                     0.040        30.      1665.       230.      1.000
 90TH PERCENTILE            0.053        35.                            1.000
 MAXIMUM                    0.070        35.      2400.       430.      1.000
 DATE OF MAXIMUM       1991-01-30 1991-09-19 1991-11-14 1991-01-30 1991-07-17
 STANDARD DEVIATION         0.012         4.      1089.       159.      0.225




                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       17
 MEAN                     19208.0
 MINIMUM                  14397.0
 DATE OF MINIMUM       1991-09-19
 10TH PERCENTILE          14627.3
 MEDIAN                   17049.0
 90TH PERCENTILE          25767.7
 MAXIMUM                  29328.0
 DATE OF MAXIMUM       1991-04-18
 STANDARD DEVIATION        4599.3





 STATION - SALTA DTO. ANTA-TOLOCHE                  STATION NO. 001009
 COUNTRY - ARGENTINA                                DEPTH(M)    9999.9
 LOCATION - OCT. 5  LAT. 24/54/00  LONG. 064/27/00  ELEVATION(M)9999.9
 REGIONAL CENTRE - AMRA                             WATER TYPE   GROUNDWATER

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1992-05-31 TO 1992-05-31

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC        NH3          F        ALK         pH
                             COND                  DISS      TOTAL           
                            02041      07555      09104      10102      10302
                            us/cm     mg/L N     mg/L F       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          1          1          1          1
 MEAN                        567.       0.11        0.8     147.00        8.6
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               Mg   SULPHATE         Cl         Ca         Fe
                             DISS                  DISS       DISS      TOTAL
                            12103      16306      17203      20101      26002
                          mg/L Mg   mg/L SO4    mg/L Cl    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        1          1          1          1          1
 MEAN                          2.        50.        56.      2.000       0.14
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               As
                            TOTAL
                            33003
                          mg/L As


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES        1
 MEAN                       0.130
 MINIMUM                         
 DATE OF MINIMUM                 
 10TH PERCENTILE                 
 MEDIAN                          
 90TH PERCENTILE                 
 MAXIMUM                         
 DATE OF MAXIMUM                 
 STANDARD DEVIATION              





 STATION - NAHUEL HUAPI - BARILOCHE                 STATION NO. 001012
 COUNTRY - ARGENTINA                                DEPTH(M)      80.0
 LOCATION - OCT. 5  LAT. 41/01/53  LONG. 071/30/01  ELEVATION(M) 764.0
 REGIONAL CENTRE - AMRA                             WATER TYPE   LAKE       

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1993-11-26 TO 1993-11-26

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      TRANS   CHLORO A     NO3NO2
                             COND                                            
                            02041      02062      02076      06711      07105
                            us/cm      deg C          m       mg/L     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          2          1          1          2
 MEAN                         30.        9.5       15.0     0.0001       0.01
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                              NH3         O2        ALK         pH         Mg
                                        DISS      TOTAL                  DISS
                            07556      08101      10102      10302      12103
                           mg/L N    mg/L O2       mg/L   pH UNITS    mg/L Mg


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2          1          2          1          2
 MEAN                        0.01       11.0       9.01        7.3         1.
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               Si          P   SULPHATE         Ca
                         REACTIVE      TOTAL                  DISS
                            14101      15405      16306      20101
                         mg/LSiO2     mg/L P   mg/L SO4    mg/L Ca


 NO. OF L-FLAGGED VALUES        0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES        2          1          2          2
 MEAN                        9.84      0.005         1.      2.950
 MINIMUM                                                          
 DATE OF MINIMUM                                                  
 10TH PERCENTILE                                                  
 MEDIAN                                                           
 90TH PERCENTILE                                                  
 MAXIMUM                                                          
 DATE OF MAXIMUM                                                  
 STANDARD DEVIATION                                               





 STATION - PUERTO PILCOMAYO                         STATION NO. 001014
 COUNTRY - ARGENTINA                                DEPTH(M)       6.0
 LOCATION - OCT. 5  LAT. 25/17/00  LONG. 057/40/00  ELEVATION(M)  56.2
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1991-01-01 TO 1993-12-31
 PERIOD OF RECORD FROM  - 1993-02-10 TO 1993-12-27

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             TEMP   HYDROCAR     NO3NO2        NH3         O2
                                       TOTAL                             DISS
                            02061      06570      07105      07551      08101
                            deg C       ug/L     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          1          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10          0         10         10         10
 MEAN                        24.4      200.0       1.24       0.15        5.7
 MINIMUM                     18.3                  0.21       0.10        4.3
 DATE OF MINIMUM       1993-09-28            1993-07-01 1993-07-01 1993-11-11
 10TH PERCENTILE             18.3                  0.21       0.10        4.3
 MEDIAN                      22.5                  1.26       0.15        5.6
 90TH PERCENTILE             30.0                  2.01       0.15        6.5
 MAXIMUM                     30.3                  2.01       0.20        7.5
 DATE OF MAXIMUM       1993-02-10            1993-08-25 1993-09-28 1993-02-10
 STANDARD DEVIATION           4.9                  0.68       0.02        1.0




                                F        ALK         pH   SUSP SOL         Mg
                             DISS      TOTAL               105 DEG       DISS
                            09110      10102      10301      10401      12103
                           mg/L F       mg/L   pH UNITS       mg/L    mg/L Mg


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10         10         10         10         10
 MEAN                         0.1      42.10        7.2        95.         4.
 MINIMUM                      0.1      35.00        6.8        72.         3.
 DATE OF MINIMUM       1993-02-10 1993-02-10 1993-02-10 1993-09-28 1993-06-22
 10TH PERCENTILE              0.1      35.00        6.8        72.         3.
 MEDIAN                       0.1      39.50        7.2       100.         5.
 90TH PERCENTILE              0.1      53.00        7.3       112.         5.
 MAXIMUM                      0.1      54.00        7.3       123.         6.
 DATE OF MAXIMUM       1993-12-27 1993-04-14 1993-06-22 1993-12-27 1993-11-11
 STANDARD DEVIATION           0.0       6.49        0.2        17.         1.




                                P   SULPHATE         Cl         Ca         Cr
                            TOTAL                  DISS       DISS      TOTAL
                            15405      16302      17204      20101      24002
                           mg/L P   mg/L SO4    mg/L Cl    mg/L Ca    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1         10         10         10          0
 MEAN                       0.100        11.        20.      7.330      0.005
 MINIMUM                                  3.         8.      5.000           
 DATE OF MINIMUM                  1993-09-28 1993-07-01 1993-09-28           
 10TH PERCENTILE                          3.         8.      5.000           
 MEDIAN                                   9.        22.      8.000           
 90TH PERCENTILE                         19.        30.      9.000           
 MAXIMUM                                 32.        32.      9.000           
 DATE OF MAXIMUM                  1993-12-27 1993-03-24 1993-07-01           
 STANDARD DEVIATION                       9.         9.      1.612           




                               Fe         Cu         Zn   COLIFORM   FAEC COL
                            TOTAL      TOTAL      TOTAL      TOTAL           
                            26002      29006      30004      36001      36011
                          mg/L Fe    mg/L Cu    mg/L Zn   No/100ml   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10          2          2          8          8
 MEAN                        0.19      0.007      0.024     19312.       582.
 MINIMUM                     0.10                            4500.        23.
 DATE OF MINIMUM       1993-07-01                       1993-04-14 1993-03-24
 10TH PERCENTILE             0.10                                            
 MEDIAN                      0.15                           11000.       237.
 90TH PERCENTILE             0.20                                            
 MAXIMUM                     0.50                           54000.      1460.
 DATE OF MAXIMUM       1993-02-10                       1993-10-28 1993-02-10
 STANDARD DEVIATION          0.11                           21620.       609.




                               Cd         Pb       INST
                            TOTAL      TOTAL     DISCHG
                            48001      82001      97160
                          mg/L Cd    mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES        2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        0          2          9
 MEAN                       0.003      0.015     3571.7
 MINIMUM                                         3061.0
 DATE OF MINIMUM                             1993-09-28
 10TH PERCENTILE                                       
 MEDIAN                                          3487.0
 90TH PERCENTILE                                       
 MAXIMUM                                         4355.0
 DATE OF MAXIMUM                             1993-02-10
 STANDARD DEVIATION                               366.1



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Last updated: 2001-07-30