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STATISTICS for THE UNITED KINGDOM

STATISTICS FOR THE UNITED KINGDOM


GEMS/WATER - STATISTICAL SUMMARY BY STATION     2002-02-15   PAGE 595

 STATION - RIVER THAMES                             STATION NO. 027001
 COUNTRY - UNITED KINGDOM                           DEPTH(M)       3.0
 LOCATION - OCT. 0  LAT. 51/25/44  LONG. 000/19/02  ELEVATION(M)   4.7
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-01-13 TO 1984-12-27

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B         CN   CHLORO A
                             COND                  DISS                      
                            02041      02061      05102      06606      06711
                            us/cm      deg C     mg/L B    mg/L Cn       mg/L


 NO. OF L-FLAGGED VALUES        0          0          0          3          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      116        116        111          1        117
 MEAN                        595.       11.9        0.3      0.010     0.6046
 MINIMUM                     375.        0.0        0.0      0.010     0.0015
 DATE OF MINIMUM       1984-12-27 1982-01-13 1983-10-26 1982-01-27 1983-11-24
 10TH PERCENTILE             529.        5.0        0.1                0.0043
 MEDIAN                      600.       12.0        0.2      0.010     0.0136
 90TH PERCENTILE             653.       20.0        0.5                0.1096
 MAXIMUM                     705.       25.0        0.6      0.010    22.2000
 DATE OF MAXIMUM       1982-01-27 1983-07-19 1984-09-13 1984-11-12 1983-08-17
 STANDARD DEVIATION           54.        5.6        0.1      0.000     3.2175




                           NO3NO2        NH3         O2        COD          F
                                                   DISS                  DISS
                            07105      07555      08101      08301      09105
                           mg/L N     mg/L N    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          7          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      117        110        117        110        116
 MEAN                        7.28       0.24        9.9        21.        0.3
 MINIMUM                     5.10       0.01        5.7         4.        0.1
 DATE OF MINIMUM       1984-06-14 1983-06-15 1982-09-07 1984-02-23 1984-03-07
 10TH PERCENTILE             6.10       0.02        7.8        13.        0.2
 MEDIAN                      6.90       0.18        9.9        20.        0.3
 90TH PERCENTILE             8.83       0.44       12.1        31.        0.4
 MAXIMUM                    11.80       2.00       14.6        46.        0.8
 DATE OF MAXIMUM       1984-01-09 1984-10-02 1984-04-26 1983-11-28 1984-05-30
 STANDARD DEVIATION          1.26       0.24        1.8         8.        0.1




                              ALK         pH   SUSP SOL         Na         Mg
                            TOTAL               105 DEG       DISS       DISS
                            10102      10302      10401      11105      12102
                             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      116        117        116         59         59
 MEAN                        3.76        8.0        22.        32.         5.
 MINIMUM                     2.20        7.4         2.        18.         5.
 DATE OF MINIMUM       1984-10-08 1984-06-28 1983-11-24 1982-11-25 1983-07-06
 10TH PERCENTILE             3.26        7.8         6.        21.         5.
 MEDIAN                      3.80        8.0        13.        31.         5.
 90TH PERCENTILE             4.20        8.3        42.        45.         6.
 MAXIMUM                     4.40        8.9       171.        48.         7.
 DATE OF MAXIMUM       1984-12-18 1984-05-08 1982-11-25 1984-09-13 1984-11-19
 STANDARD DEVIATION          0.37        0.3        25.         9.         0.






                               Si      PO4-P         Cl    P,P-DDT    P,P-DDE
                         REACTIVE        SOL       DISS                      
                            14101      15254      17203      18000      18020
                         mg/LSiO2   mg/L PO4    mg/L Cl       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0        109        109
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      116        117        117          0          0
 MEAN                       11.70      1.505        41.      2.800      1.120
 MINIMUM                     0.50      0.410        27.      0.050      0.020
 DATE OF MINIMUM       1984-04-26 1984-01-30 1983-02-04 1982-09-07 1982-09-07
 10TH PERCENTILE             8.08      0.607        33.      0.050      0.020
 MEDIAN                     12.40      1.240        42.      0.050      0.020
 90TH PERCENTILE            14.70      2.713        49.      0.050      0.020
 MAXIMUM                    15.90      3.280        56.     50.000     20.000
 DATE OF MAXIMUM       1984-09-03 1984-09-03 1983-11-24 1982-11-25 1982-11-25
 STANDARD DEVIATION          2.86      0.826         6.     11.445      4.578




                         DIELDRIN          K         Cr         Mn         Ni
                                        DISS      TOTAL      TOTAL      TOTAL
                            18150      19105      24002      25004      28001
                             ug/L     mg/L K    mg/L Cr    mg/L Mn    mg/L Ni


 NO. OF L-FLAGGED VALUES       60          0         58          0         57
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       49         59          0         58          1
 MEAN                       0.364        6.4      0.010       0.03      0.010
 MINIMUM                    0.005        2.2      0.010       0.01      0.010
 DATE OF MINIMUM       1982-09-07 1984-02-14 1982-01-13 1982-09-07 1982-01-13
 10TH PERCENTILE            0.005        3.1      0.010       0.01      0.010
 MEDIAN                     0.005        6.1      0.010       0.02      0.010
 90TH PERCENTILE            0.012        8.9      0.010       0.05      0.010
 MAXIMUM                    9.000       10.1      0.010       0.10      0.010
 DATE OF MAXIMUM       1984-09-03 1982-09-15 1984-12-27 1983-11-28 1984-12-27
 STANDARD DEVIATION         1.535        2.0      0.000       0.02      0.000




                               Cu         Zn         Cd         Ba         Pb
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            29006      30004      48001      80011      82001
                          mg/L Cu    mg/L Zn    mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES       49          0         58        117         55
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9         58          0          0          3
 MEAN                       0.010      0.024      0.587      0.500      0.010
 MINIMUM                    0.010      0.010      0.001      0.500      0.010
 DATE OF MINIMUM       1982-01-13 1983-08-22 1982-09-07 1982-01-13 1982-01-13
 10TH PERCENTILE            0.010      0.020      0.001      0.500      0.010
 MEDIAN                     0.010      0.020      1.000      0.500      0.010
 90TH PERCENTILE            0.010      0.030      1.000      0.500      0.010
 MAXIMUM                    0.010      0.040      1.000      0.500      0.010
 DATE OF MAXIMUM       1984-12-27 1982-11-16 1982-01-27 1984-12-27 1984-12-27
 STANDARD DEVIATION         0.000      0.007      0.496      0.000      0.000




                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       99
 MEAN                        69.4
 MINIMUM                      7.0
 DATE OF MINIMUM       1984-09-13
 10TH PERCENTILE              9.0
 MEDIAN                      55.6
 90TH PERCENTILE            152.0
 MAXIMUM                    281.0
 DATE OF MAXIMUM       1983-12-15
 STANDARD DEVIATION          63.8





 STATION - RIVER AVON                               STATION NO. 027002
 COUNTRY - UNITED KINGDOM                           DEPTH(M)       4.5
 LOCATION - OCT. 0  LAT. 51/25/07  LONG. 002/29/11  ELEVATION(M)  15.5
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-11-15 TO 1984-12-12

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             TEMP     NO3NO2      NO2-N        NH3         pH
                                                                             
                            02061      07105      07207      07555      10302
                            deg C     mg/L N     mg/L N     mg/L N   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         36         37         37         37
 MEAN                        10.1       7.49       0.11       0.33        8.1
 MINIMUM                      3.0       2.80       0.02       0.04        7.8
 DATE OF MINIMUM       1983-02-23 1984-07-11 1983-11-14 1983-11-14 1983-08-10
 10TH PERCENTILE              4.0       4.42       0.05       0.13        7.8
 MEDIAN                       8.0       6.80       0.10       0.27        8.0
 90TH PERCENTILE             17.5      11.12       0.15       0.54        8.3
 MAXIMUM                     21.0      14.95       0.19       1.32        8.7
 DATE OF MAXIMUM       1983-07-20 1982-11-15 1984-05-22 1984-02-22 1984-07-11
 STANDARD DEVIATION           5.1       2.69       0.04       0.22        0.2




                         SUSP SOL         Na         Mg         Si      PO4-P
                          105 DEG       DISS       DISS   REACTIVE        SOL
                            10401      11103      12103      14101      15254
                             mg/L    mg/L Na    mg/L Mg   mg/LSiO2   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       37          2          2         26         36
 MEAN                         30.        19.         8.       3.71      0.942
 MINIMUM                       3.                             0.94      0.280
 DATE OF MINIMUM       1984-10-16                       1984-05-09 1983-11-14
 10TH PERCENTILE               7.                             1.64      0.322
 MEDIAN                       14.                             3.85      0.755
 90TH PERCENTILE              88.                             4.94      1.828
 MAXIMUM                     160.                             5.70      2.300
 DATE OF MAXIMUM       1983-01-31                       1984-09-19 1984-09-05
 STANDARD DEVIATION           39.                             1.19      0.589




                               Cl          K         Ca         Cr         Mn
                             DISS       DISS       DISS      TOTAL      TOTAL
                            17203      19103      20101      24002      25004
                          mg/L Cl     mg/L K    mg/L Ca    mg/L Cr    mg/L Mn


 NO. OF L-FLAGGED VALUES        0          0          0         10          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       36          2          2         13          2
 MEAN                         38.        5.4    128.500      0.003       0.03
 MINIMUM                       6.                            0.002           
 DATE OF MINIMUM       1984-05-09                       1983-02-02           
 10TH PERCENTILE              23.                            0.002           
 MEDIAN                       36.                            0.002           
 90TH PERCENTILE              55.                            0.004           
 MAXIMUM                      74.                            0.013           
 DATE OF MAXIMUM       1984-10-16                       1984-11-13           
 STANDARD DEVIATION           13.                            0.002           




                               Fe         Ni         Cu         Cd         Pb
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            26004      28001      29006      48001      82001
                          mg/L Fe    mg/L Ni    mg/L Cu    mg/L Cd    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          4          2          8          8
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2         18         22         16         14
 MEAN                        0.19      0.004      0.011      0.042      0.005
 MINIMUM                               0.002      0.001      0.000      0.002
 DATE OF MINIMUM                  1983-02-10 1984-01-19 1983-01-12 1983-02-10
 10TH PERCENTILE                       0.002      0.003      0.000      0.002
 MEDIAN                                0.003      0.010      0.000      0.003
 90TH PERCENTILE                       0.006      0.020      0.001      0.008
 MAXIMUM                               0.011      0.041      0.700      0.025
 DATE OF MAXIMUM                  1983-02-02 1983-04-21 1982-11-15 1983-04-21
 STANDARD DEVIATION                    0.002      0.009      0.153      0.005




                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       37
 MEAN                        24.3
 MINIMUM                      3.5
 DATE OF MINIMUM       1984-09-05
 10TH PERCENTILE              4.1
 MEDIAN                      13.2
 90TH PERCENTILE             50.2
 MAXIMUM                    112.2
 DATE OF MAXIMUM       1983-01-31
 STANDARD DEVIATION          24.4





 STATION - RIVER EXE                                STATION NO. 027003
 COUNTRY - UNITED KINGDOM                           DEPTH(M)       1.5
 LOCATION - OCT. 0  LAT. 50/48/13  LONG. 003/30/36  ELEVATION(M)  25.9
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-10-14 TO 1984-12-07

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC   CHLORO A     NO3NO2
                             COND                                            
                            02041      02061      06001      06711      07105
                            us/cm      deg C     mg/L C       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       35         35         27         24         35
 MEAN                        181.       11.4         8.     0.0046       2.66
 MINIMUM                     126.        4.9         4.     0.0010       1.30
 DATE OF MINIMUM       1983-03-28 1983-01-20 1984-01-16 1984-02-16 1983-09-22
 10TH PERCENTILE             134.        6.0         5.     0.0018       1.85
 MEDIAN                      174.       10.5         8.     0.0039       2.60
 90TH PERCENTILE             248.       18.8        10.     0.0070       3.35
 MAXIMUM                     284.       21.0        21.     0.0160       5.50
 DATE OF MAXIMUM       1984-07-09 1984-06-19 1983-06-07 1983-04-21 1982-11-25
 STANDARD DEVIATION           43.        4.8         4.     0.0033       0.74




                              NH3         O2        BOD     PERM V        ALK
                                        DISS                            TOTAL
                            07556      08101      08201      08401      10101
                           mg/L N    mg/L O2    mg/L O2    mg/L O2       mg/L


 NO. OF L-FLAGGED VALUES        2          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       33         35         24         28         35
 MEAN                        0.07       11.1         2.         2.       0.85
 MINIMUM                     0.01        8.0         1.         1.       0.40
 DATE OF MINIMUM       1983-09-05 1984-07-09 1982-10-14 1983-07-04 1983-09-22
 10TH PERCENTILE             0.01        8.8         1.         1.       0.50
 MEDIAN                      0.06       11.0         2.         2.       0.80
 90TH PERCENTILE             0.09       13.0         2.         3.       1.30
 MAXIMUM                     0.44       14.5         6.         7.       1.40
 DATE OF MAXIMUM       1983-04-21 1984-07-23 1983-04-21 1983-09-22 1984-07-09
 STANDARD DEVIATION          0.07        1.5         1.         1.       0.29




                               pH   SUSP SOL         Na         Mg         Si
                                     105 DEG       DISS       DISS   REACTIVE
                            10302      10401      11103      12102      14101
                         pH UNITS       mg/L    mg/L Na    mg/L Mg   mg/LSiO2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       35         35         35         35         35
 MEAN                         7.6         9.        12.         4.       3.81
 MINIMUM                      7.0         1.         6.         3.       0.39
 DATE OF MINIMUM       1982-10-14 1984-07-23 1982-10-14 1984-10-29 1984-04-24
 10TH PERCENTILE              7.1         2.         8.         3.       1.85
 MEDIAN                       7.5         5.        10.         4.       4.10
 90TH PERCENTILE              7.9        17.        20.         5.       4.80
 MAXIMUM                      8.9        62.        26.         6.       6.50
 DATE OF MAXIMUM       1984-04-09 1983-04-21 1984-07-09 1983-08-04 1982-11-25
 STANDARD DEVIATION           0.4        11.         5.         1.       1.22




                            PO4-P         Cl    P,P-DDT    P,P-DDE     ALDRIN
                              SOL       DISS                                 
                            15254      17202      18000      18020      18130
                         mg/L PO4    mg/L Cl       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0          0          5          5          5
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       35         35          0          0          0
 MEAN                       0.124        18.      0.005      0.003      0.001
 MINIMUM                    0.030        11.      0.005      0.003      0.001
 DATE OF MINIMUM       1984-02-01 1983-05-05 1983-03-03 1983-03-03 1983-03-03
 10TH PERCENTILE            0.035        13.                                 
 MEDIAN                     0.080        17.      0.005      0.003      0.001
 90TH PERCENTILE            0.265        26.                                 
 MAXIMUM                    0.400        28.      0.005      0.003      0.001
 DATE OF MAXIMUM       1984-06-19 1983-07-20 1984-02-01 1984-02-01 1984-02-01
 STANDARD DEVIATION         0.100         5.      0.000      0.000      0.000




                         DIELDRIN        BHC          K         Ca         Cr
                                                   DISS       DISS      TOTAL
                            18150      18814      19103      20103      24002
                             ug/L       ug/L     mg/L K    mg/L Ca    mg/L Cr


 NO. OF L-FLAGGED VALUES        5          0          0          0         23
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          5         35         35         11
 MEAN                       0.003      0.004        2.2     17.454      0.004
 MINIMUM                    0.003      0.002        1.4     10.900      0.001
 DATE OF MINIMUM       1983-03-03 1983-05-23 1984-10-29 1983-09-22 1982-10-14
 10TH PERCENTILE                                    1.5     12.950      0.001
 MEDIAN                     0.003      0.002        1.9     16.600      0.005
 90TH PERCENTILE                                    3.0     22.100      0.005
 MAXIMUM                    0.003      0.012        4.1     25.600      0.005
 DATE OF MAXIMUM       1984-02-01 1983-08-17 1983-09-05 1983-08-04 1984-12-07
 STANDARD DEVIATION         0.000      0.004        0.7      3.643      0.002




                               Mn         Fe         Ni         Cu         Zn
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            25004      26004      28001      29006      30004
                          mg/L Mn    mg/L Fe    mg/L Ni    mg/L Cu    mg/L Zn


 NO. OF L-FLAGGED VALUES        0          0         20         18          7
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       34         34         14         16         27
 MEAN                        0.04       0.29      0.004      0.005      0.007
 MINIMUM                     0.00       0.07      0.001      0.001      0.003
 DATE OF MINIMUM       1982-11-25 1984-04-09 1983-03-28 1982-11-25 1983-09-05
 10TH PERCENTILE             0.02       0.09      0.001      0.002      0.005
 MEDIAN                      0.03       0.17      0.005      0.005      0.007
 90TH PERCENTILE             0.06       0.48      0.005      0.005      0.012
 MAXIMUM                     0.11       1.86      0.016      0.015      0.013
 DATE OF MAXIMUM       1983-10-18 1983-04-21 1983-03-03 1983-08-17 1983-04-21
 STANDARD DEVIATION          0.02       0.34      0.003      0.003      0.003




                               As   FAEC COL       FAEC         Cd         Pb
                            TOTAL                 STREP      TOTAL      TOTAL
                            33003      36012      36102      48001      82001
                          mg/L As   No/100ml   No/100ml    mg/L Cd    mg/L Pb


 NO. OF L-FLAGGED VALUES        1          0          0         30         24
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         33         33          4         10
 MEAN                       0.010      4165.       436.      0.000      0.006
 MINIMUM                                 70.         6.      0.000      0.001
 DATE OF MINIMUM                  1984-07-23 1983-07-04 1982-10-14 1982-10-14
 10TH PERCENTILE                        460.         9.      0.000      0.001
 MEDIAN                                2000.       154.      0.001      0.008
 90TH PERCENTILE                      10420.      1323.      0.001      0.009
 MAXIMUM                              22000.      3470.      0.001      0.014
 DATE OF MAXIMUM                  1983-04-21 1983-11-17 1984-12-07 1984-01-16
 STANDARD DEVIATION                    5420.       725.      0.000      0.004




                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES        2
 MEAN                        68.2
 MINIMUM                         
 DATE OF MINIMUM                 
 10TH PERCENTILE                 
 MEDIAN                          
 90TH PERCENTILE                 
 MAXIMUM                         
 DATE OF MAXIMUM                 
 STANDARD DEVIATION              





 STATION - RIVER TRENT                              STATION NO. 027004
 COUNTRY - UNITED KINGDOM                           DEPTH(M)       4.0
 LOCATION - OCT. 0  LAT. 52/56/19  LONG. 001/08/06  ELEVATION(M)  15.7
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-03-02 TO 1984-12-17

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B        TOC     NO3NO2
                             COND                  DISS                      
                            02041      02061      05102      06001      07105
                            us/cm      deg C     mg/L B     mg/L C     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       60         49         23         58         61
 MEAN                        887.       14.0        0.5        15.       8.33
 MINIMUM                     477.        5.0        0.0         5.       5.60
 DATE OF MINIMUM       1983-06-02 1983-02-08 1983-10-11 1984-02-07 1982-07-16
 10TH PERCENTILE             605.        8.0        0.2         7.       6.50
 MEDIAN                      915.       13.5        0.4        16.       8.60
 90TH PERCENTILE            1090.       22.0        0.7        20.       9.88
 MAXIMUM                    1160.       24.0        0.8        22.      11.10
 DATE OF MAXIMUM       1984-08-23 1983-07-27 1984-07-12 1984-05-08 1983-11-25
 STANDARD DEVIATION          185.        5.2        0.2         4.       1.36




                              NH3         O2          F        ALK         pH
                                        DISS       DISS      TOTAL           
                            07556      08102      09105      10102      10302
                           mg/L N    mg/L O2     mg/L F       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES        3          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       57         48         27         61         58
 MEAN                        0.25        9.9        0.4       3.20        7.9
 MINIMUM                     0.00        6.9        0.2       2.00        7.4
 DATE OF MINIMUM       1983-10-11 1984-08-23 1984-07-12 1984-02-07 1984-10-26
 10TH PERCENTILE             0.00        7.7        0.2       2.50        7.6
 MEDIAN                      0.13        9.8        0.3       3.30        7.8
 90TH PERCENTILE             0.52       11.8        0.4       3.79        8.2
 MAXIMUM                     1.70       13.2        0.6       4.10        8.6
 DATE OF MAXIMUM       1983-02-28 1983-07-14 1983-09-14 1982-04-20 1983-08-12
 STANDARD DEVIATION          0.32        1.4        0.1       0.49        0.3




                         SUSP SOL         Na         Mg         Si      PO4-P
                          105 DEG       DISS       DISS   REACTIVE        SOL
                            10401      11103      12102      14101      15254
                             mg/L    mg/L Na    mg/L Mg   mg/LSiO2   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       60         23         26          3         58
 MEAN                         31.        77.        21.       5.77      1.693
 MINIMUM                       7.        23.        14.                 0.400
 DATE OF MINIMUM       1983-06-23 1982-06-23 1983-10-11            1984-02-07
 10TH PERCENTILE               9.        36.        15.                 0.768
 MEDIAN                       19.        76.        21.                 1.565
 90TH PERCENTILE              72.       113.        25.                 2.600
 MAXIMUM                     154.       132.        28.                 2.900
 DATE OF MAXIMUM       1983-04-26 1984-07-12 1984-06-13            1984-07-12
 STANDARD DEVIATION           32.        29.         4.                 0.700




                         SULPHATE         Cl    P,P-DDT    P,P-DDE     ALDRIN
                                        DISS                                 
                            16302      17203      18000      18020      18130
                         mg/L SO4    mg/L Cl       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0          0          4          4          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       29         61          1          4          2
 MEAN                        174.        98.      0.031      0.011      0.006
 MINIMUM                     105.        43.      0.001      0.001      0.001
 DATE OF MINIMUM       1982-06-23 1984-02-07 1984-05-31 1984-05-31 1984-05-31
 10TH PERCENTILE             124.        48.                 0.001           
 MEDIAN                      185.       100.      0.050      0.006      0.010
 90TH PERCENTILE             215.       145.                 0.020           
 MAXIMUM                     220.       165.      0.050      0.020      0.010
 DATE OF MAXIMUM       1984-07-25 1984-01-26 1983-08-12 1983-08-12 1983-08-12
 STANDARD DEVIATION           33.        31.      0.026      0.009      0.005




                         DIELDRIN       PCBS        BHC          K         Ca
                                                              DISS       DISS
                            18150      18165      18814      19103      20103
                             ug/L       ug/L       ug/L     mg/L K    mg/L Ca


 NO. OF L-FLAGGED VALUES        5          2          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7          3         24         20         25
 MEAN                       0.558      0.430      4.616       10.6    100.000
 MINIMUM                    0.001      0.050      0.013        6.0     68.000
 DATE OF MINIMUM       1984-05-31 1984-05-31 1984-11-15 1983-03-28 1982-07-16
 10TH PERCENTILE            0.001                 0.023        6.8     82.200
 MEDIAN                     0.006      0.050      0.039       10.1    102.500
 90TH PERCENTILE            0.950                 8.528       14.0    110.000
 MAXIMUM                    5.000      1.000     50.000       16.5    130.000
 DATE OF MAXIMUM       1984-12-17 1983-07-14 1984-09-25 1984-07-12 1984-03-07
 STANDARD DEVIATION         1.569      0.520     13.395        2.9     12.995




                               Cr         Cr         Ni         Ni         Cu
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            24002      24052      28001      28101      29006
                          mg/L Cr    mg/L Cr    mg/L Ni    mg/L Ni    mg/L Cu


 NO. OF L-FLAGGED VALUES       15         23         11         13          4
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       43         36         47         46         55
 MEAN                       0.020      0.017      0.037      0.026      0.024
 MINIMUM                    0.002      0.002      0.010      0.010      0.010
 DATE OF MINIMUM       1984-09-28 1984-09-28 1982-11-05 1982-10-21 1982-07-16
 10TH PERCENTILE            0.010      0.010      0.010      0.010      0.010
 MEDIAN                     0.015      0.015      0.030      0.030      0.020
 90TH PERCENTILE            0.030      0.030      0.062      0.050      0.040
 MAXIMUM                    0.050      0.040      0.130      0.070      0.120
 DATE OF MAXIMUM       1984-11-15 1984-09-25 1982-06-23 1984-01-26 1982-06-23
 STANDARD DEVIATION         0.011      0.009      0.023      0.014      0.016




                               Cu         Zn         Zn         As         Cd
                             DISS      TOTAL       DISS      TOTAL      TOTAL
                            29106      30004      30104      33003      48001
                          mg/L Cu    mg/L Zn    mg/L Zn    mg/L As    mg/L Cd


 NO. OF L-FLAGGED VALUES       12          1          2          4          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       47         58         57         26         58
 MEAN                       0.017      0.060      0.033      0.049      0.177
 MINIMUM                    0.010      0.020      0.010      0.000      0.000
 DATE OF MINIMUM       1982-06-23 1982-07-16 1982-07-16 1983-03-28 1983-06-23
 10TH PERCENTILE            0.010      0.030      0.020      0.000      0.000
 MEDIAN                     0.020      0.050      0.030      0.005      0.001
 90TH PERCENTILE            0.030      0.100      0.050      0.013      0.600
 MAXIMUM                    0.040      0.210      0.060      0.500      2.200
 DATE OF MAXIMUM       1984-04-12 1982-06-23 1982-10-21 1984-11-15 1984-04-12
 STANDARD DEVIATION         0.008      0.034      0.012      0.145      0.438




                               Cd         Ba         Pb         Pb       INST
                             DISS      TOTAL      TOTAL       DISS     DISCHG
                            48101      80016      82001      82101      97160
                          mg/L Cd    ug/L Hg    mg/L Pb    mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES        5          7          0          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       53         13         58         54         56
 MEAN                       0.119      0.122      0.022      0.005       99.1
 MINIMUM                    0.000      0.050      0.001      0.001       26.1
 DATE OF MINIMUM       1982-04-20 1984-03-07 1982-07-16 1982-03-02 1984-07-25
 10TH PERCENTILE            0.000      0.050      0.004      0.001       27.9
 MEDIAN                     0.000      0.100      0.010      0.003       59.3
 90TH PERCENTILE            0.400      0.215      0.065      0.012      234.4
 MAXIMUM                    2.100      0.360      0.174      0.016      475.7
 DATE OF MAXIMUM       1984-04-12 1982-06-23 1984-01-26 1983-04-25 1984-02-07
 STANDARD DEVIATION         0.330      0.077      0.029      0.004      107.2





 STATION - RIVER DEE                                STATION NO. 027005
 COUNTRY - UNITED KINGDOM                           DEPTH(M)       3.0
 LOCATION - OCT. 0  LAT. 53/08/04  LONG. 002/52/12  ELEVATION(M)   4.0
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-04-25 TO 1984-12-18

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP    PHENOLS         CN   CHLORO A
                             COND                                            
                            02041      02061      06532      06606      06711
                            us/cm      deg C       mg/L    mg/L Cn       mg/L


 NO. OF L-FLAGGED VALUES        0          0         52          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       71         75          0          1         58
 MEAN                        277.       11.2      0.007      0.013     0.0560
 MINIMUM                     156.        2.5      0.005                0.0009
 DATE OF MINIMUM       1982-11-19 1984-01-22 1982-04-25            1983-03-03
 10TH PERCENTILE             163.        4.2      0.005                0.0015
 MEDIAN                      266.       11.5      0.005                0.0035
 90TH PERCENTILE             381.       18.7      0.005                0.0093
 MAXIMUM                     851.       21.2      0.050                1.7000
 DATE OF MAXIMUM       1983-08-06 1983-07-11 1984-11-16            1984-10-08
 STANDARD DEVIATION          104.        5.2      0.009                0.2579




                           NO3NO2      NO2-N        NH3         O2     PERM V
                                                              DISS           
                            07105      07207      07556      08101      08401
                           mg/L N     mg/L N     mg/L N    mg/L O2    mg/L O2


 NO. OF L-FLAGGED VALUES        1          5          4          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       80         75         79         74         66
 MEAN                        1.76       0.05       0.17        9.1         3.
 MINIMUM                     0.16       0.01       0.05        2.8         2.
 DATE OF MINIMUM       1982-05-21 1982-08-20 1982-05-11 1982-06-29 1984-03-14
 10TH PERCENTILE             1.10       0.01       0.06        6.6         2.
 MEDIAN                      1.58       0.04       0.14        9.4         3.
 90TH PERCENTILE             2.45       0.08       0.29       11.8         5.
 MAXIMUM                    10.00       0.29       0.62       13.0         8.
 DATE OF MAXIMUM       1982-10-11 1983-09-01 1982-10-11 1984-12-18 1983-04-11
 STANDARD DEVIATION          1.07       0.04       0.11        2.1         1.




                                F        ALK         pH   SUSP SOL         Na
                             DISS      TOTAL               105 DEG       DISS
                            09105      10101      10302      10401      11103
                           mg/L F       mg/L   pH UNITS       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        3          0          0          6          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        3         77         75         70         32
 MEAN                         0.1       1.21        7.6        10.        23.
 MINIMUM                      0.1       0.40        6.8         1.         7.
 DATE OF MINIMUM       1982-12-02 1982-11-23 1984-03-14 1982-05-11 1982-12-02
 10TH PERCENTILE                        0.57        7.2         2.        11.
 MEDIAN                       0.1       1.00        7.6         7.        21.
 90TH PERCENTILE                        1.82        7.9        20.        35.
 MAXIMUM                      0.1       5.00        8.3        98.        38.
 DATE OF MAXIMUM       1982-07-25 1983-08-06 1984-12-18 1983-04-11 1984-08-17
 STANDARD DEVIATION           0.0       0.75        0.3        13.         9.




                               Mg         Si      PO4-P   SULPHATE         Cl
                            TOTAL   REACTIVE        SOL                  DISS
                            12002      14101      15254      16304      17203
                          mg/L Mg   mg/LSiO2   mg/L PO4   mg/L SO4    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          0          7          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       36          8         70         35         80
 MEAN                          6.       2.99      0.232        31.        28.
 MINIMUM                       0.       1.71      0.050         8.        13.
 DATE OF MINIMUM       1982-12-02 1982-04-25 1982-11-19 1982-08-20 1982-11-23
 10TH PERCENTILE               3.                 0.050        14.        17.
 MEDIAN                        5.       3.42      0.170        27.        26.
 90TH PERCENTILE               7.                 0.374        49.        41.
 MAXIMUM                      14.       4.28      1.400        61.        69.
 DATE OF MAXIMUM       1983-09-14 1982-06-29 1982-10-11 1984-05-05 1983-08-06
 STANDARD DEVIATION            2.       1.05      0.221        14.        10.




                                K         Ca         Cr         Mn         Fe
                             DISS      TOTAL      TOTAL      TOTAL      TOTAL
                            19103      20003      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         25          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       32         36          0         36         36
 MEAN                         3.5     32.086      0.010       0.08       0.34
 MINIMUM                      1.4     12.300      0.010       0.03       0.14
 DATE OF MINIMUM       1984-11-29 1982-08-20 1982-05-08 1983-08-19 1983-08-19
 10TH PERCENTILE              1.8     17.060      0.010       0.04       0.16
 MEDIAN                       3.6     30.500      0.010       0.07       0.28
 90TH PERCENTILE              4.5     41.620      0.010       0.11       0.51
 MAXIMUM                      8.9    100.000      0.010       0.23       1.15
 DATE OF MAXIMUM       1983-09-14 1983-09-14 1984-12-18 1982-12-29 1983-04-11
 STANDARD DEVIATION           1.5     16.448      0.000       0.04       0.23




                               Ni         Cu         Zn         Cd         Pb
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            28001      29006      30004      48001      82001
                          mg/L Ni    mg/L Cu    mg/L Zn    mg/L Cd    mg/L Pb


 NO. OF L-FLAGGED VALUES       20         18          4         17         17
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          8         21          4          4
 MEAN                       0.010      0.017      0.028      0.096      0.007
 MINIMUM                    0.005      0.005      0.010      0.000      0.005
 DATE OF MINIMUM       1984-01-22 1984-11-29 1982-05-08 1984-04-09 1982-06-03
 10TH PERCENTILE            0.010      0.008      0.010      0.000      0.005
 MEDIAN                     0.010      0.010      0.019      0.001      0.005
 90TH PERCENTILE            0.010      0.014      0.055      0.002      0.010
 MAXIMUM                    0.010      0.169      0.122      1.000      0.023
 DATE OF MAXIMUM       1983-10-10 1983-08-19 1984-12-18 1984-12-18 1983-04-11
 STANDARD DEVIATION         0.001      0.031      0.027      0.301      0.004





 STATION - RIVER LEVEN                              STATION NO. 027006
 COUNTRY - UNITED KINGDOM                           DEPTH(M)       0.9
 LOCATION - OCT. 0  LAT. 55/58/14  LONG. 004/34/56  ELEVATION(M)   4.3
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-01-27 TO 1984-12-19

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP     NO3NO2      NO2-N        NH3
                             COND                                            
                            02041      02061      07105      07207      07555
                            us/cm      deg C     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          0         20         12
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       35         36         36         16         24
 MEAN                         74.        9.3       0.27       0.01       0.03
 MINIMUM                      60.        1.0       0.06       0.01       0.01
 DATE OF MINIMUM       1982-02-25 1983-03-04 1983-06-24 1982-01-27 1982-03-26
 10TH PERCENTILE              60.        3.0       0.11       0.01       0.01
 MEDIAN                       70.       10.0       0.25       0.01       0.02
 90TH PERCENTILE              92.       16.0       0.40       0.01       0.05
 MAXIMUM                     130.       19.0       0.91       0.02       0.08
 DATE OF MAXIMUM       1982-10-19 1983-07-21 1982-10-19 1983-09-21 1984-08-16
 STANDARD DEVIATION           16.        5.0       0.14       0.00       0.02




                               O2        ALK         pH   SUSP SOL      PO4-P
                             DISS      TOTAL               105 DEG        SOL
                            08101      10102      10302      10401      15254
                          mg/L O2       mg/L   pH UNITS       mg/L   mg/L PO4


 NO. OF L-FLAGGED VALUES        0          0          0          1         31
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       35         36         35         35          3
 MEAN                        11.1       0.32        7.0         4.      0.019
 MINIMUM                      9.2       0.20        4.4         1.      0.010
 DATE OF MINIMUM       1984-07-11 1982-02-25 1982-12-17 1982-07-15 1982-03-26
 10TH PERCENTILE              9.5       0.20        6.7         1.      0.010
 MEDIAN                      11.0       0.30        7.1         3.      0.020
 90TH PERCENTILE             12.4       0.40        7.3         7.      0.020
 MAXIMUM                     13.1       0.60        7.7        13.      0.120
 DATE OF MAXIMUM       1983-03-04 1982-10-19 1982-04-26 1982-11-22 1984-12-19
 STANDARD DEVIATION           1.2       0.09        0.5         3.      0.018




                               Cl    P,P-DDT    P,P-DDE     ALDRIN   DIELDRIN
                             DISS                                            
                            17203      18000      18020      18130      18150
                          mg/L Cl       ug/L       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0          3          3          3          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       36          0          0          0          0
 MEAN                         11.     13.667      3.900      1.700      7.533
 MINIMUM                       7.                                            
 DATE OF MINIMUM       1982-04-26                                            
 10TH PERCENTILE               8.                                            
 MEDIAN                       10.                                            
 90TH PERCENTILE              15.                                            
 MAXIMUM                      26.                                            
 DATE OF MAXIMUM       1983-04-26                                            
 STANDARD DEVIATION            4.                                            




                              BHC         Cr         Ni         Cu         Zn
                                       TOTAL      TOTAL      TOTAL      TOTAL
                            18814      24002      28001      29006      30004
                             ug/L    mg/L Cr    mg/L Ni    mg/L Cu    mg/L Zn


 NO. OF L-FLAGGED VALUES        1         34         34         11          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          0          0         23         34
 MEAN                      22.200      0.003      0.003      0.003      0.018
 MINIMUM                               0.003      0.003      0.003      0.002
 DATE OF MINIMUM                  1982-02-25 1982-02-25 1982-02-25 1982-04-26
 10TH PERCENTILE                       0.003      0.003      0.003      0.007
 MEDIAN                                0.003      0.003      0.003      0.013
 90TH PERCENTILE                       0.003      0.003      0.004      0.034
 MAXIMUM                               0.005      0.005      0.005      0.057
 DATE OF MAXIMUM                  1984-06-18 1984-06-18 1984-06-18 1984-01-31
 STANDARD DEVIATION                    0.000      0.000      0.001      0.012




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


 NO. OF L-FLAGGED VALUES       34         10          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        0         24         35
 MEAN                       0.588      0.005       35.8
 MINIMUM                    0.500      0.003        3.7
 DATE OF MINIMUM       1982-02-25 1982-03-26 1984-08-16
 10TH PERCENTILE            0.500      0.003        6.8
 MEDIAN                     0.500      0.004       22.2
 90TH PERCENTILE            1.000      0.010       80.7
 MAXIMUM                    1.000      0.013       98.8
 DATE OF MAXIMUM       1982-10-19 1983-12-08 1982-11-22
 STANDARD DEVIATION         0.193      0.003       30.7





 STATION - RIVER MERSEY                             STATION NO. 027007
 COUNTRY - UNITED KINGDOM                           DEPTH(M)       4.0
 LOCATION - OCT. 0  LAT. 53/23/13  LONG. 002/34/35  ELEVATION(M)   5.6
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1983-01-05 TO 1984-12-19

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC      NO2-N      NO3-N        NH3         O2
                             COND                                        DISS
                            02041      07207      07313      07556      08101
                            us/cm     mg/L N     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          2          2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       96         95         95         97         93
 MEAN                        662.       0.21       2.19       4.68        5.8
 MINIMUM                     295.       0.02       0.05       1.00        0.9
 DATE OF MINIMUM       1983-01-05 1983-02-23 1983-02-23 1983-01-05 1983-02-23
 10TH PERCENTILE             433.       0.07       0.60       1.57        2.4
 MEDIAN                      630.       0.14       2.40       4.45        6.1
 90TH PERCENTILE             956.       0.44       3.20       7.89        9.2
 MAXIMUM                    1059.       0.82       4.05      12.75       10.9
 DATE OF MAXIMUM       1983-08-31 1984-08-08 1984-01-04 1984-07-04 1984-02-01
 STANDARD DEVIATION          193.       0.16       0.93       2.44        2.6




                              COD        ALK         pH   SUSP SOL         Si
                                       TOTAL               105 DEG   REACTIVE
                            08301      10102      10302      10401      14101
                          mg/L O2       mg/L   pH UNITS       mg/L   mg/LSiO2


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       93         95         96         97         93
 MEAN                         44.       2.46        7.3        21.       8.00
 MINIMUM                      22.       1.00        6.8         5.       5.20
 DATE OF MINIMUM       1983-04-13 1983-04-06 1983-04-27 1983-06-22 1983-04-27
 10TH PERCENTILE              28.       1.60        7.1         7.       6.30
 MEDIAN                       42.       2.50        7.3        14.       8.10
 90TH PERCENTILE              63.       3.30        7.5        35.       9.50
 MAXIMUM                     101.       3.70        7.8       164.      11.00
 DATE OF MAXIMUM       1983-02-23 1984-08-01 1984-07-25 1984-05-16 1984-05-02
 STANDARD DEVIATION           15.       0.66        0.2        24.       1.15




                            PO4-P         Cl         Cr         Mn         Fe
                              SOL       DISS      TOTAL      TOTAL      TOTAL
                            15254      17201      24002      25004      26004
                         mg/L PO4    mg/L Cl    mg/L Cr    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0         19          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       95         97         29         49         49
 MEAN                       1.526        94.      0.013       0.23       0.90
 MINIMUM                    0.100        30.      0.005       0.08       0.47
 DATE OF MINIMUM       1984-02-08 1983-02-02 1984-06-13 1983-12-14 1983-08-24
 10TH PERCENTILE            0.350        46.      0.007       0.15       0.57
 MEDIAN                     1.250        90.      0.010       0.20       0.88
 90TH PERCENTILE            3.300       149.      0.020       0.32       1.20
 MAXIMUM                    4.750       197.      0.020       0.57       1.95
 DATE OF MAXIMUM       1984-07-18 1984-05-16 1983-06-15 1983-11-23 1984-05-16
 STANDARD DEVIATION         1.157        40.      0.005       0.08       0.28




                               Ni         Cu         Zn         Cd         Ba
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            28001      29006      30004      48001      80011
                          mg/L Ni    mg/L Cu    mg/L Zn    mg/L Cd    ug/L Hg


 NO. OF L-FLAGGED VALUES        8          0          0         18         12
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       41         49         49         31         29
 MEAN                       0.010      0.009      0.033      0.054      0.120
 MINIMUM                    0.006      0.004      0.016      0.000      0.050
 DATE OF MINIMUM       1983-09-07 1983-10-05 1983-07-13 1983-11-16 1983-04-06
 10TH PERCENTILE            0.007      0.005      0.021      0.000      0.061
 MEDIAN                     0.010      0.009      0.032      0.000      0.100
 90TH PERCENTILE            0.014      0.012      0.047      0.002      0.190
 MAXIMUM                    0.016      0.019      0.068      2.000      0.360
 DATE OF MAXIMUM       1984-05-16 1984-05-16 1984-05-16 1983-03-23 1983-09-21
 STANDARD DEVIATION         0.002      0.003      0.012      0.296      0.066




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


 NO. OF L-FLAGGED VALUES        1         12          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        2         37         89
 MEAN                       0.090      0.013       52.8
 MINIMUM                               0.004        5.3
 DATE OF MINIMUM                  1984-05-02 1984-08-22
 10TH PERCENTILE                       0.005       10.8
 MEDIAN                                0.012       28.3
 90TH PERCENTILE                       0.020      137.5
 MAXIMUM                               0.027      231.0
 DATE OF MAXIMUM                  1983-12-14 1983-01-05
 STANDARD DEVIATION                    0.006       52.0





 STATION - RIVER TWEED ABOVE GALAFOOT               STATION NO. 027008
 COUNTRY - UNITED KINGDOM                           DEPTH(M)       0.6
 LOCATION - OCT. 0  LAT. 55/36/12  LONG. 002/46/43  ELEVATION(M)  91.7
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-01-07 TO 1984-12-27

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             TEMP      NO3-N        NH3         O2        BOD
                                                              DISS           
                            02061      07314      07554      08101      08201
                            deg C     mg/L N     mg/L N    mg/L O2    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       98         99         99         99          2
 MEAN                         9.3       1.15       0.09       11.3         2.
 MINIMUM                      0.0       0.50       0.01        9.0           
 DATE OF MINIMUM       1982-01-07 1983-09-27 1983-08-08 1984-08-16           
 10TH PERCENTILE              2.5       0.80       0.05        9.8           
 MEDIAN                       8.5       1.10       0.08       11.1           
 90TH PERCENTILE             17.0       1.50       0.13       13.0           
 MAXIMUM                     24.5       2.50       0.18       14.6           
 DATE OF MAXIMUM       1983-07-12 1983-12-28 1984-03-29 1984-05-08           
 STANDARD DEVIATION           5.5       0.35       0.03        1.2           




                           PERM V         pH   SUSP SOL   SULPHATE         Cl
                                                105 DEG                  DISS
                            08401      10302      10401      16301      17204
                          mg/L O2   pH UNITS       mg/L   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       99         99         99         99         99
 MEAN                          3.        7.7         5.         8.        12.
 MINIMUM                       1.        7.1         1.         3.         6.
 DATE OF MINIMUM       1983-08-02 1984-02-06 1983-03-17 1984-09-27 1982-10-18
 10TH PERCENTILE               1.        7.3         1.         6.        10.
 MEDIAN                        2.        7.6         3.         8.        12.
 90TH PERCENTILE               3.        8.3         8.        11.        14.
 MAXIMUM                      11.        9.1       100.        14.        19.
 DATE OF MAXIMUM       1982-10-18 1983-08-31 1982-10-18 1984-02-06 1984-02-01
 STANDARD DEVIATION            1.        0.4        10.         2.         2.




                         FAEC COL       INST
                                      DISCHG
                            36012      97160
                         No/100ml       m3/S


 NO. OF L-FLAGGED VALUES        1          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES       62         99
 MEAN                       1400.       33.2
 MINIMUM                     100.        5.1
 DATE OF MINIMUM       1983-01-19 1984-08-20
 10TH PERCENTILE             200.        6.9
 MEDIAN                     1200.       23.2
 90TH PERCENTILE            2570.       67.9
 MAXIMUM                    5000.      228.0
 DATE OF MAXIMUM       1984-07-18 1982-10-18
 STANDARD DEVIATION         1101.       35.2





 STATION - RIVER CARRON                             STATION NO. 027009
 COUNTRY - UNITED KINGDOM                           DEPTH(M)       0.8
 LOCATION - OCT. 0  LAT. 57/26/18  LONG. 005/26/51  ELEVATION(M)   3.5
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1983-01-10 TO 1984-12-06

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP      NO2-N      NO3-N        NH3
                             COND                                            
                            02041      02061      07207      07313      07556
                            us/cm      deg C     mg/L N     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0         24          0          5
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         24          0         24         19
 MEAN                         51.        9.3       0.01       0.05       0.01
 MINIMUM                      30.        2.1       0.01       0.02       0.00
 DATE OF MINIMUM       1984-12-06 1984-02-02 1983-01-10 1984-10-10 1984-03-06
 10TH PERCENTILE              37.        4.0       0.01       0.03       0.00
 MEDIAN                       52.        9.5       0.01       0.05       0.00
 90TH PERCENTILE              62.       14.2       0.01       0.06       0.02
 MAXIMUM                      70.       16.2       0.01       0.08       0.03
 DATE OF MAXIMUM       1983-04-05 1984-07-19 1984-12-06 1984-04-26 1983-12-05
 STANDARD DEVIATION           10.        4.2       0.00       0.01       0.01




                               O2        COD        ALK         pH   SUSP SOL
                             DISS                 TOTAL               105 DEG
                            08101      08301      10102      10302      10401
                          mg/L O2    mg/L O2       mg/L   pH UNITS       mg/L


 NO. OF L-FLAGGED VALUES        0         10          0          0          2
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       24         14         24         24         21
 MEAN                        11.2         9.       0.16        6.9         2.
 MINIMUM                      9.6         6.       0.00        6.1         0.
 DATE OF MINIMUM       1983-07-26 1983-04-05 1984-12-06 1983-01-10 1984-05-29
 10TH PERCENTILE              9.9         6.       0.10        6.3         0.
 MEDIAN                      11.1         8.       0.10        6.8         1.
 90TH PERCENTILE             12.5        12.       0.25        7.4         4.
 MAXIMUM                     13.2        18.       0.40        7.8         5.
 DATE OF MAXIMUM       1984-02-02 1983-07-26 1983-05-04 1983-02-01 1984-01-04
 STANDARD DEVIATION           1.0         3.       0.09        0.4         2.




                               Cl         Cu         Zn         Cd         Ba
                             DISS      TOTAL      TOTAL      TOTAL      TOTAL
                            17204      29006      30004      48001      80011
                          mg/L Cl    mg/L Cu    mg/L Zn    mg/L Cd    ug/L Hg


 NO. OF L-FLAGGED VALUES        0         16          8         12         19
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       24          8         16         12          4
 MEAN                         14.      0.012      0.010      0.035      0.181
 MINIMUM                       8.      0.001      0.001      0.000      0.100
 DATE OF MINIMUM       1984-12-06 1983-04-05 1983-09-06 1983-05-04 1983-01-10
 10TH PERCENTILE              10.      0.004      0.001      0.000      0.100
 MEDIAN                       13.      0.007      0.004      0.001      0.100
 90TH PERCENTILE              18.      0.009      0.025      0.106      0.390
 MAXIMUM                      30.      0.128      0.051      0.300      0.790
 DATE OF MAXIMUM       1983-02-01 1984-02-02 1983-07-26 1984-11-20 1983-05-04
 STANDARD DEVIATION            5.      0.025      0.013      0.091      0.179




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


 NO. OF L-FLAGGED VALUES       14          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES       10         24
 MEAN                       0.002        9.9
 MINIMUM                    0.001        0.7
 DATE OF MINIMUM       1983-01-10 1984-05-29
 10TH PERCENTILE            0.001        0.9
 MEDIAN                     0.002        4.9
 90TH PERCENTILE            0.004       26.6
 MAXIMUM                    0.008       34.2
 DATE OF MAXIMUM       1983-07-26 1984-10-10
 STANDARD DEVIATION         0.002       10.4





 STATION - LOUGH NEAGH                              STATION NO. 027010
 COUNTRY - UNITED KINGDOM                           DEPTH(M)      10.0
 LOCATION - OCT. 0  LAT. 54/37/05  LONG. 006/25/50  ELEVATION(M)  12.0
 REGIONAL CENTRE - EURA                             WATER TYPE   LAKE       

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1983-01-12 TO 1984-12-17

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                            INTEG       ELEC     NO3NO2         pH   SUSP SOL
                           SAMPLE       COND                          105 DEG
                            00190      02041      07105      10302      10401
                              N/A      us/cm     mg/L N   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       95         94         94         94         87
 MEAN                          1.       301.       0.38        8.2         9.
 MINIMUM                       1.       259.       0.01        7.0         3.
 DATE OF MINIMUM       1983-01-12 1983-06-02 1983-06-02 1984-04-30 1983-01-19
 10TH PERCENTILE               1.       270.       0.01        7.8         5.
 MEDIAN                        1.       302.       0.18        8.1         8.
 90TH PERCENTILE               1.       325.       1.04        8.9        13.
 MAXIMUM                       1.       348.       1.48        9.3        38.
 DATE OF MAXIMUM       1984-12-17 1984-11-05 1984-03-05 1984-07-02 1983-05-04
 STANDARD DEVIATION            0.        20.       0.41        0.4         5.




                               Si      PO4-P
                         REACTIVE        SOL
                            14101      15254
                         mg/LSiO2   mg/L PO4


 NO. OF L-FLAGGED VALUES        0          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES       94         93
 MEAN                        5.59      0.045
 MINIMUM                     0.07      0.000
 DATE OF MINIMUM       1983-04-27 1984-05-21
 10TH PERCENTILE             0.28      0.002
 MEDIAN                      7.00      0.052
 90TH PERCENTILE             8.99      0.080
 MAXIMUM                     9.72      0.117
 DATE OF MAXIMUM       1984-12-03 1983-08-16
 STANDARD DEVIATION          3.36      0.030





 STATION - RUTLAND WATER RESERVOIR                  STATION NO. 027011
 COUNTRY - UNITED KINGDOM                           DEPTH(M)      10.7
 LOCATION - OCT. 0  LAT. 52/39/25  LONG. 000/37/29  ELEVATION(M)  83.2
 REGIONAL CENTRE - EURA                             WATER TYPE   LAKE       

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-01-05 TO 1984-12-18

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP   CHLORO A     NO3NO2      NO2-N
                             COND                                            
                            02041      02061      06711      07105      07207
                            us/cm      deg C       mg/L     mg/L N     mg/L N


 NO. OF L-FLAGGED VALUES        0          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       88         90         98         94         18
 MEAN                        641.       11.3     8.2919       1.95       0.02
 MINIMUM                     589.        2.0     1.0000       0.71       0.01
 DATE OF MINIMUM       1984-12-18 1982-01-19 1982-04-06 1984-12-18 1982-02-23
 10TH PERCENTILE             620.        4.0     2.4600       1.19       0.01
 MEDIAN                      642.       10.4     6.7000       1.99       0.02
 90TH PERCENTILE             663.       19.0    16.7000       2.82       0.02
 MAXIMUM                     703.       21.3    20.8000       3.30       0.03
 DATE OF MAXIMUM       1983-05-31 1983-08-23 1983-03-01 1984-04-09 1982-01-05
 STANDARD DEVIATION           19.        5.7     5.1364       0.58       0.01




                              NH3         O2        BOD     PERM V        ALK
                                        DISS                            TOTAL
                            07555      08101      08201      08401      10102
                           mg/L N    mg/L O2    mg/L O2    mg/L O2       mg/L


 NO. OF L-FLAGGED VALUES       29          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       28         53          1         17         19
 MEAN                        0.07       11.2         2.         3.       3.41
 MINIMUM                     0.05        8.3                    1.       3.30
 DATE OF MINIMUM       1982-03-16 1982-10-26            1982-02-23 1982-01-12
 10TH PERCENTILE             0.05        8.9                    2.       3.30
 MEDIAN                      0.05       11.6                    2.       3.40
 90TH PERCENTILE             0.11       13.0                    3.       3.51
 MAXIMUM                     0.15       14.2                    4.       3.60
 DATE OF MAXIMUM       1982-06-29 1982-04-21            1982-02-16 1982-05-19
 STANDARD DEVIATION          0.02        1.6                    1.       0.09




                               pH   SUSP SOL         Na         Mg         Si
                                     105 DEG      TOTAL      TOTAL   REACTIVE
                            10302      10401      11001      12002      14101
                         pH UNITS       mg/L    mg/L Na    mg/L Mg   mg/LSiO2


 NO. OF L-FLAGGED VALUES        0         12          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       92          7         18         18         92
 MEAN                         8.3         6.        30.        11.       1.33
 MINIMUM                      7.8         5.        29.        10.       0.03
 DATE OF MINIMUM       1983-08-02 1982-01-05 1982-03-02 1982-02-09 1982-04-21
 10TH PERCENTILE              8.0         5.        29.        10.       0.30
 MEDIAN                       8.3         5.        30.        11.       1.24
 90TH PERCENTILE              8.5         7.        31.        11.       2.35
 MAXIMUM                      8.6         8.        31.        11.       4.07
 DATE OF MAXIMUM       1982-04-21 1984-12-18 1982-01-12 1982-02-16 1983-08-02
 STANDARD DEVIATION           0.2         1.         1.         0.       0.79




                            PO4-P   SULPHATE         Cl          K         Ca
                              SOL                  DISS      TOTAL      TOTAL
                            15254      16304      17201      19001      20003
                         mg/L PO4   mg/L SO4    mg/L Cl     mg/L K    mg/L Ca


 NO. OF L-FLAGGED VALUES        8          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       56         17         19         18         18
 MEAN                       0.060       142.        44.        6.6    104.417
 MINIMUM                    0.005       137.        41.        6.2    102.000
 DATE OF MINIMUM       1983-08-10 1982-02-09 1982-03-30 1982-03-02 1982-01-12
 10TH PERCENTILE            0.022       137.        42.        6.2    102.000
 MEDIAN                     0.056       141.        44.        6.6    104.000
 90TH PERCENTILE            0.109       146.        46.        6.8    107.100
 MAXIMUM                    0.135       149.        46.        6.9    108.500
 DATE OF MAXIMUM       1984-01-09 1982-02-23 1982-02-09 1982-02-16 1982-05-19
 STANDARD DEVIATION         0.033         3.         1.        0.2      1.972




                               Mn         Fe       INST
                            TOTAL      TOTAL     DISCHG
                            25004      26004      97160
                          mg/L Mn    mg/L Fe       m3/S


 NO. OF L-FLAGGED VALUES        4          1          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       14         17         18
 MEAN                        0.03       0.19        1.3
 MINIMUM                     0.01       0.03        1.0
 DATE OF MINIMUM       1982-04-27 1982-05-19 1982-04-13
 10TH PERCENTILE             0.01       0.06        1.0
 MEDIAN                      0.02       0.16        1.3
 90TH PERCENTILE             0.04       0.35        1.5
 MAXIMUM                     0.09       0.48        1.7
 DATE OF MAXIMUM       1982-01-05 1982-02-23 1982-03-02
 STANDARD DEVIATION          0.02       0.11        0.2





 STATION - TUNSTALL RESERVOIR                       STATION NO. 027012
 COUNTRY - UNITED KINGDOM                           DEPTH(M)      16.9
 LOCATION - OCT. 0  LAT. 54/45/43  LONG. 001/53/56  ELEVATION(M) 219.5
 REGIONAL CENTRE - EURA                             WATER TYPE   LAKE       

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-03-16 TO 1984-11-20

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP          B    PHENOLS         CN
                             COND                  DISS                      
                            02041      02061      05102      06532      06606
                            us/cm      deg C     mg/L B       mg/L    mg/L Cn


 NO. OF L-FLAGGED VALUES        0          0          3          8          8
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       13          9          5          0          0
 MEAN                        116.       11.1        0.0      0.010      0.010
 MINIMUM                      92.        2.0        0.0      0.010      0.010
 DATE OF MINIMUM       1984-11-20 1983-02-22 1982-11-16 1982-03-16 1982-03-16
 10TH PERCENTILE              94.        2.0                                 
 MEDIAN                      110.       12.5        0.0      0.010      0.010
 90TH PERCENTILE             124.       18.0                                 
 MAXIMUM                     204.       21.5        0.1      0.010      0.010
 DATE OF MAXIMUM       1982-08-17 1982-07-20 1982-06-15 1983-02-22 1983-02-22
 STANDARD DEVIATION           28.        6.8        0.0      0.000      0.000




                         CHLORO A     NO3NO2      NO2-N        NH3         O2
                                                                         DISS
                            06711      07105      07207      07555      08102
                             mg/L     mg/L N     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        1          0         10          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7         14          3         12         11
 MEAN                      2.3000       0.38       0.01       0.04       10.5
 MINIMUM                   0.1000       0.15       0.00       0.01        8.6
 DATE OF MINIMUM       1982-12-14 1982-08-17 1984-11-20 1982-03-16 1982-07-20
 10TH PERCENTILE                        0.19       0.01       0.01        8.6
 MEDIAN                    2.1000       0.36       0.01       0.03       10.7
 90TH PERCENTILE                        0.49       0.01       0.06       11.9
 MAXIMUM                   4.8000       0.76       0.05       0.11       12.8
 DATE OF MAXIMUM       1982-08-17 1984-01-17 1983-06-21 1982-09-21 1983-02-22
 STANDARD DEVIATION        1.4387       0.15       0.01       0.03        1.3




                              COD     PERM V          F        ALK         pH
                                                   DISS      TOTAL           
                            08301      08401      09105      10102      10302
                          mg/L O2    mg/L O2     mg/L F       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES        1          0          3          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          9          7         13         14
 MEAN                         11.         4.        0.1       0.36        7.1
 MINIMUM                                  2.        0.0       0.20        5.8
 DATE OF MINIMUM                  1982-09-21 1984-11-20 1982-03-16 1984-11-20
 10TH PERCENTILE                                    0.0       0.20        6.1
 MEDIAN                                   4.        0.1       0.30        7.1
 90TH PERCENTILE                                    0.2       0.50        7.9
 MAXIMUM                                  7.        0.3       0.70        8.1
 DATE OF MAXIMUM                  1982-11-16 1982-06-15 1982-09-21 1982-04-20
 STANDARD DEVIATION                       2.        0.1       0.15        0.7




                         SUSP SOL         Na         Mg         Si      PO4-P
                          105 DEG       DISS       DISS   REACTIVE        SOL
                            10401      11105      12102      14101      15254
                             mg/L    mg/L Na    mg/L Mg   mg/LSiO2   mg/L PO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          4
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11          9          9         11          4
 MEAN                         10.         5.         3.       3.01      0.030
 MINIMUM                       1.         4.         2.       0.72      0.010
 DATE OF MINIMUM       1982-03-16 1982-07-20 1982-12-14 1982-08-17 1982-03-16
 10TH PERCENTILE               1.                             0.82           
 MEDIAN                        3.         5.         3.       3.40      0.010
 90TH PERCENTILE              13.                             4.22           
 MAXIMUM                      72.         6.         5.       4.30      0.160
 DATE OF MAXIMUM       1982-11-16 1982-09-21 1982-09-21 1984-11-20 1982-08-17
 STANDARD DEVIATION           20.         1.         1.       1.16      0.049




                                P   SULPHATE         Cl    P,P-DDT    P,P-DDE
                            TOTAL                  DISS                      
                            15405      16301      17203      18000      18020
                           mg/L P   mg/L SO4    mg/L Cl       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          9          9
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8         11         13          0          0
 MEAN                       0.106        23.        11.      2.500      0.700
 MINIMUM                    0.036        13.         7.      2.500      0.700
 DATE OF MINIMUM       1982-12-14 1984-09-25 1982-04-20 1982-03-16 1982-03-16
 10TH PERCENTILE                         13.         7.                      
 MEDIAN                     0.090        19.        10.      2.500      0.700
 90TH PERCENTILE                         30.        16.                      
 MAXIMUM                    0.220        53.        20.      2.500      0.700
 DATE OF MAXIMUM       1983-02-22 1982-12-14 1982-03-16 1983-02-22 1983-02-22
 STANDARD DEVIATION         0.063        11.         4.      0.000      0.000




                           ALDRIN   DIELDRIN       PCBS        BHC          K
                                                                         DISS
                            18130      18150      18165      18814      19105
                             ug/L       ug/L       ug/L       ug/L     mg/L K


 NO. OF L-FLAGGED VALUES        9          9          8          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          1          3          9
 MEAN                       0.478      0.700      0.005      1.833        1.1
 MINIMUM                    0.300      0.700      0.005      0.400        0.8
 DATE OF MINIMUM       1982-06-15 1982-03-16 1982-03-16 1982-06-15 1982-09-21
 10TH PERCENTILE                                                             
 MEDIAN                     0.500      0.700      0.005      1.600        1.1
 90TH PERCENTILE                                                             
 MAXIMUM                    0.500      0.700      0.005      4.000        1.4
 DATE OF MAXIMUM       1982-04-20 1983-02-22 1983-02-22 1982-07-20 1982-11-16
 STANDARD DEVIATION         0.067      0.000      0.000      1.272        0.2




                               Ca         Cr         Cr         Mn         Mn
                             DISS      TOTAL       DISS      TOTAL       DISS
                            20103      24002      24052      25004      25104
                          mg/L Ca    mg/L Cr    mg/L Cr    mg/L Mn    mg/L Mn


 NO. OF L-FLAGGED VALUES        0         10          9          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9          0          0         14         11
 MEAN                      10.156      0.009      0.010       0.14       0.09
 MINIMUM                    8.000      0.001      0.010       0.07       0.03
 DATE OF MINIMUM       1983-02-22 1984-01-17 1982-03-16 1982-06-15 1984-08-21
 10TH PERCENTILE                       0.001                  0.07       0.03
 MEDIAN                    10.400      0.010      0.010       0.13       0.09
 90TH PERCENTILE                       0.010                  0.20       0.15
 MAXIMUM                   12.000      0.010      0.010       0.29       0.16
 DATE OF MAXIMUM       1982-08-17 1983-02-22 1983-02-22 1982-04-20 1982-11-16
 STANDARD DEVIATION         1.413      0.003      0.000       0.06       0.04




                               Fe         Fe         Ni         Ni         Cu
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            26004      26104      28001      28101      29006
                          mg/L Fe    mg/L Fe    mg/L Ni    mg/L Ni    mg/L Cu


 NO. OF L-FLAGGED VALUES        0          0          9          9          9
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       14         11          0          0          2
 MEAN                        0.38       0.17      0.010      0.010      0.010
 MINIMUM                     0.10       0.07      0.010      0.010      0.002
 DATE OF MINIMUM       1982-03-16 1982-03-16 1982-03-16 1982-03-16 1984-09-25
 10TH PERCENTILE             0.14       0.07                            0.003
 MEDIAN                      0.36       0.16      0.010      0.010      0.010
 90TH PERCENTILE             0.63       0.27                            0.011
 MAXIMUM                     0.70       0.30      0.010      0.010      0.020
 DATE OF MAXIMUM       1982-04-20 1983-02-22 1983-02-22 1983-02-22 1982-03-16
 STANDARD DEVIATION          0.19       0.08      0.000      0.000      0.004




                               Cu         Zn         Zn         As         As
                             DISS      TOTAL       DISS      TOTAL       DISS
                            29106      30004      30104      33003      33104
                          mg/L Cu    mg/L Zn    mg/L Zn    mg/L As    mg/L As


 NO. OF L-FLAGGED VALUES        6          3          2          9          9
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          8          3          0          0
 MEAN                       0.010      0.026      0.018      0.010      0.010
 MINIMUM                    0.010      0.010      0.010      0.010      0.010
 DATE OF MINIMUM       1982-04-20 1982-06-15 1982-06-15 1982-03-16 1982-03-16
 10TH PERCENTILE                       0.010                                 
 MEDIAN                     0.010      0.020      0.020      0.010      0.010
 90TH PERCENTILE                       0.040                                 
 MAXIMUM                    0.010      0.060      0.030      0.010      0.010
 DATE OF MAXIMUM       1982-11-16 1984-11-20 1982-11-16 1983-02-22 1983-02-22
 STANDARD DEVIATION         0.000      0.016      0.008      0.000      0.000




                               Se         Se         Cd         Cd         Ba
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            34002      34102      48001      48101      80011
                          mg/L Se    mg/L Se    mg/L Cd    mg/L Cd    ug/L Hg


 NO. OF L-FLAGGED VALUES        9          9          8          7          5
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          2          1          3
 MEAN                       0.100      0.010      0.940      0.925      0.333
 MINIMUM                    0.100      0.010      0.400      0.400      0.100
 DATE OF MINIMUM       1982-03-16 1982-03-16 1982-09-21 1982-09-21 1982-06-15
 10TH PERCENTILE                                  0.400                      
 MEDIAN                     0.100      0.010      1.000      1.000      0.100
 90TH PERCENTILE                                  1.000                      
 MAXIMUM                    0.100      0.010      1.000      1.000      1.400
 DATE OF MAXIMUM       1983-02-22 1983-02-22 1982-08-17 1982-08-17 1982-04-20
 STANDARD DEVIATION         0.000      0.000      0.190      0.212      0.439




                               Hg         Pb         Pb
                             DISS      TOTAL       DISS
                            80111      82001      82101
                          ug/L Hg    mg/L Pb    mg/L Pb


 NO. OF L-FLAGGED VALUES        5          8          9
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        3          4          0
 MEAN                       0.225      0.008      0.010
 MINIMUM                    0.100      0.001      0.010
 DATE OF MINIMUM       1982-06-15 1984-09-25 1982-03-16
 10TH PERCENTILE                       0.001           
 MEDIAN                     0.100      0.010      0.010
 90TH PERCENTILE                       0.010           
 MAXIMUM                    0.500      0.010      0.010
 DATE OF MAXIMUM       1982-09-21 1983-02-22 1983-02-22
 STANDARD DEVIATION         0.175      0.004      0.000





 STATION - PATCHAM PUMPING STATION                  STATION NO. 027013
 COUNTRY - UNITED KINGDOM                           DEPTH(M)      40.1
 LOCATION - OCT. 0  LAT. 50/52/59  LONG. 000/09/39  ELEVATION(M)  19.5
 REGIONAL CENTRE - EURA                             WATER TYPE   GROUNDWATER

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

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                           NO3NO2        NH3        ALK         pH         Na
                                                  TOTAL                  DISS
                            07105      07556      10102      10302      11102
                           mg/L N     mg/L N       mg/L   pH UNITS    mg/L Na


 NO. OF L-FLAGGED VALUES        0          1          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          1          1          1
 MEAN                        7.80       0.01       3.30        7.7        13.
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                         SULPHATE         Mn         Fe
                                       TOTAL      TOTAL
                            16303      25004      26002
                         mg/L SO4    mg/L Mn    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          1          1
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        1          0          0
 MEAN                         10.       0.02       0.05
 MINIMUM                                               
 DATE OF MINIMUM                                       
 10TH PERCENTILE                                       
 MEDIAN                                                
 90TH PERCENTILE                                       
 MAXIMUM                                               
 DATE OF MAXIMUM                                       
 STANDARD DEVIATION                                    





 STATION - SOUTH YORKSHIRE AQUIFER                  STATION NO. 027014
 COUNTRY - UNITED KINGDOM                           DEPTH(M)     138.0
 LOCATION - OCT. 0  LAT. 53/27/33  LONG. 001/00/12  ELEVATION(M)  25.4
 REGIONAL CENTRE - EURA                             WATER TYPE   GROUNDWATER

 PERIOD REQUESTED FROM  - 1982-01-01 TO 1984-12-31
 PERIOD OF RECORD FROM  - 1982-01-11 TO 1984-08-28

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC      NO2-N        NH3          F        ALK
                             COND                             DISS      TOTAL
                            02041      07207      07555      09104      10102
                            us/cm     mg/L N     mg/L N     mg/L F       mg/L


 NO. OF L-FLAGGED VALUES        0          7          7          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7          0          0          7          7
 MEAN                        308.       0.01       0.01        0.1       2.07
 MINIMUM                     288.       0.00       0.01        0.0       2.00
 DATE OF MINIMUM       1982-01-11 1984-03-08 1982-01-11 1984-03-08 1982-01-11
 10TH PERCENTILE                                                             
 MEDIAN                      302.       0.00       0.01        0.1       2.10
 90TH PERCENTILE                                                             
 MAXIMUM                     326.       0.01       0.02        0.1       2.20
 DATE OF MAXIMUM       1984-08-28 1982-11-04 1984-03-22 1984-08-28 1984-03-22
 STANDARD DEVIATION           16.       0.00       0.00        0.0       0.08




                               pH         Na         Mg         Si   SULPHATE
                                       TOTAL       DISS   REACTIVE           
                            10302      11001      12103      14101      16304
                         pH UNITS    mg/L Na    mg/L Mg   mg/LSiO2   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        7          7          6          3          5
 MEAN                         8.0        10.        16.       8.20        19.
 MINIMUM                      7.9         9.        14.                   14.
 DATE OF MINIMUM       1982-01-11 1984-08-28 1984-07-02            1982-02-18
 10TH PERCENTILE                                                             
 MEDIAN                       8.0        10.        16.                   20.
 90TH PERCENTILE                                                             
 MAXIMUM                      8.0        10.        21.                   21.
 DATE OF MAXIMUM       1984-03-22 1984-03-22 1984-03-22            1984-07-02
 STANDARD DEVIATION           0.0         0.         2.                    3.




                               Cl   DIELDRIN        BHC          K         Ca
                             DISS                            TOTAL       DISS
                            17201      18150      18814      19001      20101
                          mg/L Cl       ug/L       ug/L     mg/L K    mg/L Ca


 NO. OF L-FLAGGED VALUES        0          1          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        7          0          0          6          7
 MEAN                         21.     40.000     10.000        1.9     34.771
 MINIMUM                      20.                              1.6     32.400
 DATE OF MINIMUM       1984-03-08                       1984-08-28 1982-02-18
 10TH PERCENTILE                                                             
 MEDIAN                       21.                              1.8     34.400
 90TH PERCENTILE                                                             
 MAXIMUM                      22.                              2.7     39.400
 DATE OF MAXIMUM       1982-11-04                       1982-02-18 1984-07-02
 STANDARD DEVIATION            1.                              0.4      2.421




                               Cr         Fe         Cu         Zn         As
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            24002      26002      29006      30004      33003
                          mg/L Cr    mg/L Fe    mg/L Cu    mg/L Zn    mg/L As


 NO. OF L-FLAGGED VALUES        1          1          5          5          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          5          1          0          0
 MEAN                       0.010       0.01      0.019      0.010      0.001
 MINIMUM                                0.01      0.010      0.010           
 DATE OF MINIMUM                  1982-01-11 1982-02-18 1982-11-04           
 10TH PERCENTILE                                                             
 MEDIAN                                 0.01      0.020      0.010           
 90TH PERCENTILE                                                             
 MAXIMUM                                0.01      0.030      0.010           
 DATE OF MAXIMUM                  1984-07-02 1982-01-11 1984-08-28           
 STANDARD DEVIATION                     0.00      0.007      0.000           




                         FAEC COL         Cd         Pb
                                       TOTAL      TOTAL
                            36012      48001      82001
                         No/100ml    mg/L Cd    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          2          5
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0
 MEAN                          0.      0.500      0.005
 MINIMUM                       0.                 0.005
 DATE OF MINIMUM       1982-01-11            1982-11-04
 10TH PERCENTILE                                       
 MEDIAN                        0.                 0.005
 90TH PERCENTILE                                       
 MAXIMUM                       0.                 0.005
 DATE OF MAXIMUM       1984-08-28            1984-08-28
 STANDARD DEVIATION            0.                 0.000





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GEMS/WATER
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Last updated: 2001-07-30