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STATISTICS for URUGUAY

STATISTICS FOR URUGUAY


GEMS/WATER - STATISTICAL SUMMARY BY STATION     2002-02-15   PAGE 700

 STATION - RIO SANTA LUCIA                          STATION NO. 048013
 COUNTRY - URUGUAY                                  DEPTH(M)    9999.9
 LOCATION - OCT. 5  LAT. 34/31/00  LONG. 056/24/00  ELEVATION(M)   1.9
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-03-15 TO 1984-07-10

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     N KJEL     NO3NO2        NH3
                             COND                                            
                            02041      02061      07001      07105      07554
                            us/cm      deg C     mg/L N     mg/L N     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       17         17         13         16         16
 MEAN                        244.       16.5        0.6       0.10       0.04
 MINIMUM                      85.        8.0        0.2       0.01       0.00
 DATE OF MINIMUM       1984-07-10 1983-07-12 1984-01-11 1984-06-18 1982-03-15
 10TH PERCENTILE             113.        9.4        0.2       0.03       0.00
 MEDIAN                      240.       17.0        0.5       0.10       0.05
 90TH PERCENTILE             343.       24.3        0.8       0.16       0.07
 MAXIMUM                     420.       27.0        1.2       0.23       0.15
 DATE OF MAXIMUM       1983-08-09 1984-01-11 1984-07-10 1983-06-28 1983-08-23
 STANDARD DEVIATION           91.        6.2        0.3       0.06       0.04




                               O2        BOD          F        ALK         pH
                             DISS                  DISS      TOTAL           
                            08101      08201      09104      10102      10302
                          mg/L O2    mg/L O2     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       17         15          2         17         17
 MEAN                         8.0         2.        0.3      85.53        7.3
 MINIMUM                      0.4         0.                 24.00        6.9
 DATE OF MINIMUM       1983-07-12 1983-07-12            1983-12-05 1982-10-18
 10TH PERCENTILE              4.3         1.                 29.60        6.9
 MEDIAN                       9.0         2.                 85.00        7.4
 90TH PERCENTILE              9.3         3.                130.30        7.7
 MAXIMUM                     10.0         4.                134.00        7.9
 DATE OF MAXIMUM       1984-06-18 1983-12-05            1983-08-09 1982-03-15
 STANDARD DEVIATION           2.3         1.                 35.90        0.3




                         SUSP SOL   SUSP SOL         Na         Mg      PO4-P
                          105 DEG    180 DEG       DISS       DISS        SOL
                            10401      10408      11103      12103      15254
                             mg/L       mg/L    mg/L Na    mg/L Mg   mg/L PO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       17         11         15         15         14
 MEAN                         30.        28.        24.         6.      0.060
 MINIMUM                       0.         5.         6.         2.      0.000
 DATE OF MINIMUM       1983-04-11 1984-01-11 1982-10-18 1982-10-18 1982-03-15
 10TH PERCENTILE               0.         6.         8.         2.      0.000
 MEDIAN                       18.        17.        23.         6.      0.055
 90TH PERCENTILE              70.        55.        36.         9.      0.105
 MAXIMUM                     152.        69.        37.        11.      0.190
 DATE OF MAXIMUM       1984-07-10 1982-10-18 1984-01-11 1983-08-09 1983-07-12
 STANDARD DEVIATION           39.        22.        10.         3.      0.052




                              PO4   SULPHATE         Cl          K         Ca
                            TOTAL                  DISS       DISS       DISS
                            15403      16302      17201      19103      20101
                         mg/L PO4   mg/L SO4    mg/L Cl     mg/L K    mg/L Ca


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11         13         17         15         15
 MEAN                       0.202         9.        12.        2.7     19.367
 MINIMUM                    0.097         0.         3.        1.6      8.400
 DATE OF MINIMUM       1983-04-11 1982-10-18 1983-08-09 1983-08-09 1982-10-18
 10TH PERCENTILE            0.101         0.         4.        1.8      8.800
 MEDIAN                     0.170         9.        13.        2.4     20.200
 90TH PERCENTILE            0.257        16.        17.        3.8     24.800
 MAXIMUM                    0.500        18.        24.        4.0     26.700
 DATE OF MAXIMUM       1984-07-10 1983-08-23 1982-03-15 1983-04-11 1983-08-09
 STANDARD DEVIATION         0.108         5.         5.        0.7      5.883




                               Cr         Zn   FAEC COL         Cd         Hg
                            TOTAL       DISS                  DISS       DISS
                            24002      30104      36011      48101      80111
                          mg/L Cr    mg/L Zn   No/100ml    mg/L Cd    ug/L Hg


 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         11         12          9         12
 MEAN                       0.000      0.014       818.      0.000      0.000
 MINIMUM                    0.000      0.000         0.      0.000      0.000
 DATE OF MINIMUM       1982-10-18 1983-08-09 1983-06-28 1982-10-18 1982-10-18
 10TH PERCENTILE            0.000      0.001         0.                 0.000
 MEDIAN                     0.000      0.010         0.      0.000      0.000
 90TH PERCENTILE            0.000      0.028      1538.                 0.000
 MAXIMUM                    0.000      0.040      7000.      0.000      0.000
 DATE OF MAXIMUM       1984-07-10 1984-07-10 1982-10-18 1984-07-10 1984-07-10
 STANDARD DEVIATION         0.000      0.011      2025.      0.000      0.000




                               Pb
                             DISS
                            82101
                          mg/L Pb


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       14
 MEAN                       0.000
 MINIMUM                    0.000
 DATE OF MINIMUM       1982-10-18
 10TH PERCENTILE            0.000
 MEDIAN                     0.000
 90TH PERCENTILE            0.000
 MAXIMUM                    0.000
 DATE OF MAXIMUM       1984-07-10
 STANDARD DEVIATION         0.000





 STATION - ACUIFERO RIVERA                          STATION NO. 048014
 COUNTRY - URUGUAY                                  DEPTH(M)    9999.9
 LOCATION - OCT. 5  LAT. 30/54/00  LONG. 055/32/00  ELEVATION(M)9999.9
 REGIONAL CENTRE - AMRA                             WATER TYPE   GROUNDWATER

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-03-12 TO 1984-06-12

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2        NH3         O2
                             COND                                        DISS
                            02041      02061      07105      07554      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        7          3          7          7          7
 MEAN                         80.       18.3       0.86       0.00        8.4
 MINIMUM                      63.                  0.18       0.00        7.8
 DATE OF MINIMUM       1983-10-18            1984-06-12 1982-03-12 1982-03-12
 10TH PERCENTILE                                                             
 MEDIAN                       80.                  0.90       0.00        8.0
 90TH PERCENTILE                                                             
 MAXIMUM                      95.                  1.58       0.00       10.6
 DATE OF MAXIMUM       1982-06-22            1983-10-18 1984-06-12 1982-11-15
 STANDARD DEVIATION           11.                  0.45       0.00        1.0




                              BOD          F        ALK         pH   SUSP SOL
                                        DISS      TOTAL               105 DEG
                            08201      09104      10102      10302      10401
                          mg/L O2     mg/L F       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        4          6          7          7          4
 MEAN                          1.        0.2      30.86        6.3         0.
 MINIMUM                       0.        0.1      28.00        6.1         0.
 DATE OF MINIMUM       1982-06-22 1984-06-12 1982-06-22 1983-04-08 1982-03-12
 10TH PERCENTILE                                                             
 MEDIAN                        1.        0.2      32.00        6.2         0.
 90TH PERCENTILE                                                             
 MAXIMUM                       3.        0.2      36.00        6.9         2.
 DATE OF MAXIMUM       1982-11-15 1983-10-18 1982-03-12 1983-10-18 1983-04-08
 STANDARD DEVIATION            1.        0.0       3.02        0.3         1.




                               Na         Mg      PO4-P        PO4   SULPHATE
                             DISS       DISS        SOL      TOTAL           
                            11103      12103      15254      15403      16302
                          mg/L Na    mg/L Mg   mg/L PO4   mg/L PO4   mg/L SO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5          7          1          1          6
 MEAN                          3.         2.      0.228      0.900         1.
 MINIMUM                       2.         1.                               0.
 DATE OF MINIMUM       1983-10-18 1982-11-15                       1982-11-15
 10TH PERCENTILE                                                             
 MEDIAN                        3.         2.                               0.
 90TH PERCENTILE                                                             
 MAXIMUM                       5.         3.                               4.
 DATE OF MAXIMUM       1982-11-15 1984-06-12                       1982-06-22
 STANDARD DEVIATION            1.         1.                               2.





                               Cl          K         Ca         Cr         Zn
                             DISS       DISS       DISS      TOTAL       DISS
                            17201      19103      20101      24002      30104
                          mg/L Cl     mg/L K    mg/L Ca    mg/L Cr    mg/L Zn


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7          5          7          1          1
 MEAN                          3.        2.4      9.829      0.000      0.010
 MINIMUM                       2.        1.6      8.400                      
 DATE OF MINIMUM       1982-03-12 1983-07-11 1983-07-11                      
 10TH PERCENTILE                                                             
 MEDIAN                        3.        1.8     10.100                      
 90TH PERCENTILE                                                             
 MAXIMUM                       3.        4.0     10.900                      
 DATE OF MAXIMUM       1983-07-11 1982-11-15 1982-06-22                      
 STANDARD DEVIATION            1.        1.1      0.938                      




                         FAEC COL         Cd         Hg         Pb
                                        DISS       DISS       DISS
                            36011      48101      80111      82101
                         No/100ml    mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES        7          1          2          3
 MEAN                          0.      0.000      0.000      0.000
 MINIMUM                       0.                                 
 DATE OF MINIMUM       1982-03-12                                 
 10TH PERCENTILE                                                  
 MEDIAN                        0.                                 
 90TH PERCENTILE                                                  
 MAXIMUM                       0.                                 
 DATE OF MAXIMUM       1984-06-12                                 
 STANDARD DEVIATION            0.                                 





 STATION - RIO URUGUAY SALTO                        STATION NO. 048015
 COUNTRY - URUGUAY                                  DEPTH(M)      10.0
 LOCATION - OCT. 5  LAT. 31/23/00  LONG. 057/57/00  ELEVATION(M)   5.8
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-03-11 TO 1984-07-09

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     N KJEL     NO3NO2        NH3
                             COND                                            
                            02041      02061      07001      07105      07554
                            us/cm      deg C     mg/L N     mg/L N     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       17         13         14         18         18
 MEAN                         51.       20.1        0.3       0.40       0.03
 MINIMUM                      36.       15.0        0.1       0.22       0.00
 DATE OF MINIMUM       1983-08-09 1983-07-11 1983-11-21 1983-04-11 1982-03-11
 10TH PERCENTILE              39.       15.0        0.1       0.23       0.00
 MEDIAN                       50.       20.0        0.3       0.45       0.05
 90TH PERCENTILE              61.       27.1        0.5       0.47       0.05
 MAXIMUM                      70.       29.0        1.1       0.68       0.05
 DATE OF MAXIMUM       1984-01-09 1984-01-09 1983-07-11 1983-12-05 1983-07-11
 STANDARD DEVIATION            8.        5.0        0.3       0.15       0.03




                               O2        BOD          F        ALK         pH
                             DISS                  DISS      TOTAL           
                            08101      08201      09104      10102      10302
                          mg/L O2    mg/L O2     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       18         18          4         18         18
 MEAN                         8.9         1.        0.0      20.44        6.9
 MINIMUM                      7.6         1.        0.0      12.00        6.4
 DATE OF MINIMUM       1982-03-11 1983-04-11 1982-03-11 1982-07-07 1982-11-11
 10TH PERCENTILE              7.6         1.                 13.60        6.5
 MEDIAN                       8.9         1.        0.0      20.00        6.9
 90TH PERCENTILE             10.0         2.                 24.20        7.3
 MAXIMUM                     10.0         2.        0.0      34.00        7.5
 DATE OF MAXIMUM       1983-08-23 1983-10-03 1983-04-11 1984-01-09 1984-07-09
 STANDARD DEVIATION           0.8         0.        0.0       5.07        0.3




                         SUSP SOL   SUSP SOL         Na         Mg      PO4-P
                          105 DEG    180 DEG       DISS       DISS        SOL
                            10401      10408      11103      12103      15254
                             mg/L       mg/L    mg/L Na    mg/L Mg   mg/L PO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       18         14         16         18         15
 MEAN                         20.        15.         2.         2.      0.014
 MINIMUM                       5.         6.         1.         0.      0.000
 DATE OF MINIMUM       1983-04-11 1983-12-19 1983-06-27 1982-11-11 1983-08-09
 10TH PERCENTILE               7.         6.         1.         1.      0.000
 MEDIAN                       18.        11.         2.         2.      0.000
 90TH PERCENTILE              34.        24.         3.         3.      0.021
 MAXIMUM                      52.        40.         3.         3.      0.150
 DATE OF MAXIMUM       1983-11-21 1983-11-21 1983-04-11 1983-04-11 1983-07-11
 STANDARD DEVIATION           11.        10.         1.         1.      0.039




                              PO4   SULPHATE         Cl          K         Ca
                            TOTAL                  DISS       DISS       DISS
                            15403      16302      17201      19103      20101
                         mg/L PO4   mg/L SO4    mg/L Cl     mg/L K    mg/L Ca


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12         17         18         16         18
 MEAN                       0.107         0.         2.        1.2      5.494
 MINIMUM                    0.034         0.         1.        0.8      3.400
 DATE OF MINIMUM       1983-04-11 1982-07-07 1982-07-07 1983-08-09 1983-08-09
 10TH PERCENTILE            0.035         0.         1.        0.8      4.040
 MEDIAN                     0.110         0.         2.        1.1      5.850
 90TH PERCENTILE            0.167         0.         3.        1.5      6.700
 MAXIMUM                    0.200         0.         3.        2.0      6.700
 DATE OF MAXIMUM       1982-11-11 1984-07-09 1983-10-03 1982-11-11 1982-07-07
 STANDARD DEVIATION         0.058         0.         1.        0.3      1.041




                               Cr         Zn   FAEC COL         Cd         Hg
                            TOTAL       DISS                  DISS       DISS
                            24002      30104      36011      48101      80111
                          mg/L Cr    mg/L Zn   No/100ml    mg/L Cd    ug/L Hg


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11         12         18         10         14
 MEAN                       0.000      0.009        77.      0.000      0.000
 MINIMUM                    0.000      0.000         5.      0.000      0.000
 DATE OF MINIMUM       1983-08-23 1983-08-09 1983-06-27 1983-09-13 1983-06-27
 10TH PERCENTILE            0.000      0.000         5.      0.000      0.000
 MEDIAN                     0.000      0.010        20.      0.000      0.000
 90TH PERCENTILE            0.000      0.013       115.      0.000      0.000
 MAXIMUM                    0.000      0.020       540.      0.000      0.000
 DATE OF MAXIMUM       1984-07-09 1983-10-03 1983-11-07 1984-07-09 1984-07-09
 STANDARD DEVIATION         0.000      0.006       156.      0.000      0.000




                               Pb
                             DISS
                            82101
                          mg/L Pb


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       15
 MEAN                       0.000
 MINIMUM                    0.000
 DATE OF MINIMUM       1983-04-11
 10TH PERCENTILE            0.000
 MEDIAN                     0.000
 90TH PERCENTILE            0.000
 MAXIMUM                    0.000
 DATE OF MAXIMUM       1984-07-09
 STANDARD DEVIATION         0.000





 STATION - RIO URUGUAY BELLA UNION                  STATION NO. 048038
 COUNTRY - URUGUAY                                  DEPTH(M)       8.0
 LOCATION - OCT. 5  LAT. 30/15/00  LONG. 057/35/00  ELEVATION(M)  34.5
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-12-01 TO 1984-07-09

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     N KJEL     NO3NO2        NH3
                             COND                                            
                            02041      02061      07001      07105      07554
                            us/cm      deg C     mg/L N     mg/L N     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       16         13         14         16         16
 MEAN                         54.       20.2        0.4       0.26       0.04
 MINIMUM                      40.       12.0        0.3       0.05       0.00
 DATE OF MINIMUM       1983-06-27 1984-06-12 1983-09-14 1984-07-09 1983-08-09
 10TH PERCENTILE              41.       12.8        0.3       0.07       0.00
 MEDIAN                       55.       20.0        0.3       0.23       0.05
 90TH PERCENTILE              69.       28.0        0.5       0.45       0.05
 MAXIMUM                      78.       29.0        0.6       0.68       0.15
 DATE OF MAXIMUM       1983-09-14 1984-01-16 1984-01-16 1983-12-07 1984-07-09
 STANDARD DEVIATION           12.        5.5        0.1       0.17       0.04




                               O2        BOD          F        ALK         pH
                             DISS                  DISS      TOTAL           
                            08101      08201      09104      10102      10302
                          mg/L O2    mg/L O2     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       16         16          2         16         16
 MEAN                         8.3         1.        0.0      24.62        7.0
 MINIMUM                      5.6         0.                 14.00        6.6
 DATE OF MINIMUM       1982-12-01 1983-07-11            1983-08-09 1984-06-12
 10TH PERCENTILE              5.8         0.                 14.00        6.7
 MEDIAN                       8.6         1.                 25.00        6.9
 90TH PERCENTILE              9.7         2.                 30.40        7.4
 MAXIMUM                     10.4         3.                 38.00        7.4
 DATE OF MAXIMUM       1983-04-20 1983-04-20            1983-09-14 1983-12-07
 STANDARD DEVIATION           1.3         1.                  6.14        0.2




                         SUSP SOL   SUSP SOL         Na         Mg      PO4-P
                          105 DEG    180 DEG       DISS       DISS        SOL
                            10401      10408      11103      12103      15254
                             mg/L       mg/L    mg/L Na    mg/L Mg   mg/L PO4


 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         14         16         16         14
 MEAN                         42.        25.         3.         2.      0.007
 MINIMUM                      11.         8.         2.         1.      0.000
 DATE OF MINIMUM       1983-09-14 1983-06-27 1983-08-23 1983-04-20 1983-08-09
 10TH PERCENTILE              14.         8.         2.         1.      0.000
 MEDIAN                       35.        21.         2.         2.      0.000
 90TH PERCENTILE              70.        34.         4.         2.      0.009
 MAXIMUM                      96.        78.         4.         4.      0.080
 DATE OF MAXIMUM       1983-07-11 1983-07-11 1983-04-20 1983-09-14 1983-07-11
 STANDARD DEVIATION           24.        18.         1.         1.      0.021




                              PO4   SULPHATE         Cl          K         Ca
                            TOTAL                  DISS       DISS       DISS
                            15403      16302      17201      19103      20101
                         mg/L PO4   mg/L SO4    mg/L Cl     mg/L K    mg/L Ca


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12         16         16         16         16
 MEAN                       0.133         0.         2.        1.4      5.894
 MINIMUM                    0.040         0.         1.        0.8      3.400
 DATE OF MINIMUM       1983-09-14 1982-12-01 1983-04-20 1983-08-09 1983-08-09
 10TH PERCENTILE            0.048         0.         1.        1.0      4.360
 MEDIAN                     0.115         0.         2.        1.3      5.900
 90TH PERCENTILE            0.187         0.         3.        1.7      7.380
 MAXIMUM                    0.270         0.         3.        3.0      8.400
 DATE OF MAXIMUM       1984-07-09 1984-07-09 1983-10-05 1982-12-01 1984-01-16
 STANDARD DEVIATION         0.060         0.         1.        0.5      1.289




                               Cr         Zn   FAEC COL         Cd         Hg
                            TOTAL       DISS                  DISS       DISS
                            24002      30104      36011      48101      80111
                          mg/L Cr    mg/L Zn   No/100ml    mg/L Cd    ug/L Hg


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11         12         16          9         14
 MEAN                       0.000      0.030       355.      0.000      0.000
 MINIMUM                    0.000      0.000         7.      0.000      0.000
 DATE OF MINIMUM       1983-08-23 1983-08-09 1983-04-20 1983-10-05 1983-06-27
 10TH PERCENTILE            0.000      0.000         8.                 0.000
 MEDIAN                     0.000      0.010       161.      0.000      0.000
 90TH PERCENTILE            0.000      0.086       886.                 0.000
 MAXIMUM                    0.000      0.170      1600.      0.000      0.000
 DATE OF MAXIMUM       1984-07-09 1984-01-16 1983-10-18 1984-07-09 1984-07-09
 STANDARD DEVIATION         0.000      0.054       478.      0.000      0.000




                               Pb
                             DISS
                            82101
                          mg/L Pb


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       15
 MEAN                       0.000
 MINIMUM                    0.000
 DATE OF MINIMUM       1983-04-20
 10TH PERCENTILE            0.000
 MEDIAN                     0.000
 90TH PERCENTILE            0.000
 MAXIMUM                    0.000
 DATE OF MAXIMUM       1984-07-09
 STANDARD DEVIATION         0.000





 STATION - RIO DE LA PLATA COLONIA                  STATION NO. 048039
 COUNTRY - URUGUAY                                  DEPTH(M)      10.0
 LOCATION - OCT. 5  LAT. 34/28/00  LONG. 057/51/00  ELEVATION(M)   0.2
 REGIONAL CENTRE - AMRA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-11-17 TO 1984-07-09

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     N KJEL     NO3NO2        NH3
                             COND                                            
                            02041      02061      07001      07105      07554
                            us/cm      deg C     mg/L N     mg/L N     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       15         12         12         15         15
 MEAN                         79.       16.5        0.4       0.25       0.04
 MINIMUM                      65.        9.0        0.1       0.14       0.00
 DATE OF MINIMUM       1983-08-09 1984-06-12 1983-12-06 1984-06-12 1983-04-12
 10TH PERCENTILE              68.        9.4        0.1       0.16       0.00
 MEDIAN                       75.       16.0        0.4       0.23       0.05
 90TH PERCENTILE              96.       23.1        0.5       0.34       0.08
 MAXIMUM                     100.       25.0        0.6       0.45       0.10
 DATE OF MAXIMUM       1984-06-12 1983-12-19 1984-07-09 1983-11-21 1983-11-21
 STANDARD DEVIATION           11.        5.5        0.1       0.09       0.03




                               O2        BOD          F        ALK         pH
                             DISS                  DISS      TOTAL           
                            08101      08201      09104      10102      10302
                          mg/L O2    mg/L O2     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       15         15          2         15         15
 MEAN                         9.3         1.        0.0      30.53        7.1
 MINIMUM                      8.4         0.                 24.00        6.7
 DATE OF MINIMUM       1983-11-07 1983-11-21            1982-11-17 1983-07-11
 10TH PERCENTILE              8.4         0.                 24.00        6.8
 MEDIAN                       8.8         1.                 28.00        7.1
 90TH PERCENTILE             10.5         1.                 40.00        7.4
 MAXIMUM                     10.6         2.                 44.00        7.7
 DATE OF MAXIMUM       1984-07-09 1983-12-19            1984-06-12 1983-11-21
 STANDARD DEVIATION           0.9         0.                  6.57        0.3




                         SUSP SOL   SUSP SOL         Na         Mg      PO4-P
                          105 DEG    180 DEG       DISS       DISS        SOL
                            10401      10408      11103      12103      15254
                             mg/L       mg/L    mg/L Na    mg/L Mg   mg/L PO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       15         13         15         15         13
 MEAN                         24.        19.         5.         2.      0.028
 MINIMUM                       2.         5.         3.         1.      0.000
 DATE OF MINIMUM       1983-04-12 1983-08-09 1983-07-11 1983-08-09 1983-09-15
 10TH PERCENTILE               4.         6.         3.         1.      0.003
 MEDIAN                       16.        13.         5.         2.      0.020
 90TH PERCENTILE              50.        41.         8.         3.      0.051
 MAXIMUM                      65.        55.         8.         4.      0.130
 DATE OF MAXIMUM       1983-11-21 1983-11-21 1984-06-12 1984-06-12 1983-07-11
 STANDARD DEVIATION           18.        15.         2.         1.      0.034





                              PO4   SULPHATE         Cl          K         Ca
                            TOTAL                  DISS       DISS       DISS
                            15403      16302      17201      19103      20101
                         mg/L PO4   mg/L SO4    mg/L Cl     mg/L K    mg/L Ca


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12         15         15         15         15
 MEAN                       0.126         4.         4.        1.9      8.347
 MINIMUM                    0.036         1.         3.        1.0      5.900
 DATE OF MINIMUM       1983-04-12 1984-07-09 1982-11-17 1983-08-09 1983-12-19
 10TH PERCENTILE            0.041         2.         3.        1.1      6.300
 MEDIAN                     0.130         4.         4.        1.8      8.400
 90TH PERCENTILE            0.194         6.         6.        2.3     10.100
 MAXIMUM                    0.230         7.         7.        5.0     10.100
 DATE OF MAXIMUM       1984-07-09 1983-12-19 1983-12-19 1982-11-17 1984-06-12
 STANDARD DEVIATION         0.059         2.         2.        0.9      1.323




                               Cr         Zn   FAEC COL         Cd         Hg
                            TOTAL       DISS                  DISS       DISS
                            24002      30104      36011      48101      80111
                          mg/L Cr    mg/L Zn   No/100ml    mg/L Cd    ug/L Hg


 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         11         15          9         13
 MEAN                       0.000      0.008       963.      0.000      0.004
 MINIMUM                    0.000      0.000         0.      0.000      0.000
 DATE OF MINIMUM       1983-08-24 1983-08-09 1983-06-27 1983-09-15 1983-06-27
 10TH PERCENTILE            0.000      0.000         4.                 0.000
 MEDIAN                     0.000      0.010        30.      0.000      0.000
 90TH PERCENTILE            0.000      0.017       460.                 0.000
 MAXIMUM                    0.000      0.020     13000.      0.000      0.050
 DATE OF MAXIMUM       1984-07-09 1983-12-19 1984-07-09 1984-07-09 1983-07-11
 STANDARD DEVIATION         0.000      0.007      3334.      0.000      0.014




                               Pb
                             DISS
                            82101
                          mg/L Pb


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       14
 MEAN                       0.000
 MINIMUM                    0.000
 DATE OF MINIMUM       1983-04-12
 10TH PERCENTILE            0.000
 MEDIAN                     0.000
 90TH PERCENTILE            0.000
 MAXIMUM                    0.000
 DATE OF MAXIMUM       1984-07-09
 STANDARD DEVIATION         0.000




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Last updated: 2001-07-30