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STATISTICS for THE UNITED KINGDOM

STATISTICS FOR THE UNITED KINGDOM



GEMS/WATER - STATISTICAL SUMMARY BY STATION     2002-02-15   PAGE 653

 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1980-01-02 TO 1981-12-30

 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          6          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       92        123         95          1        101
 MEAN                        564.       11.5        0.2      0.010     0.0305
 MINIMUM                     415.        2.0        0.0      0.010     0.0003
 DATE OF MINIMUM       1980-01-02 1980-01-02 1981-05-21 1980-06-26 1981-01-13
 10TH PERCENTILE             486.        4.2        0.1                0.0028
 MEDIAN                      572.       11.0        0.2      0.010     0.0112
 90TH PERCENTILE             628.       19.0        0.4                0.0879
 MAXIMUM                     682.       20.0        0.5      0.010     0.5910
 DATE OF MAXIMUM       1980-07-22 1980-08-21 1981-08-25 1981-09-02 1981-07-02
 STANDARD DEVIATION           53.        5.3        0.1      0.000     0.0675




                           NO3NO2      NO2-N        NH3         O2        BOD
                                                              DISS           
                            07105      07207      07555      08101      08201
                           mg/L N     mg/L N     mg/L N    mg/L O2    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          8          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      101          1         93        101          1
 MEAN                        6.90       0.02       0.22        9.9         3.
 MINIMUM                     1.53                  0.01        5.3           
 DATE OF MINIMUM       1980-07-22            1980-05-01 1981-09-02           
 10TH PERCENTILE             5.60                  0.02        7.5           
 MEDIAN                      7.00                  0.17        9.9           
 90TH PERCENTILE             8.18                  0.46       12.0           
 MAXIMUM                     9.10                  1.50       16.5           
 DATE OF MAXIMUM       1980-02-20            1981-07-08 1980-05-12           
 STANDARD DEVIATION          1.18                  0.23        2.0           




                              COD     PERM V          F        ALK         pH
                                                   DISS      TOTAL           
                            08301      08401      09105      10102      10301
                          mg/L O2    mg/L O2     mg/L F       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES        2          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       98          1        100        102          1
 MEAN                         24.         2.        0.2       3.80        8.3
 MINIMUM                       4.                   0.0       2.40           
 DATE OF MINIMUM       1980-07-03            1981-04-02 1980-02-20           
 10TH PERCENTILE              10.                   0.2       3.32           
 MEDIAN                       21.                   0.2       3.90           
 90TH PERCENTILE              40.                   0.3       4.20           
 MAXIMUM                      76.                   0.4       5.20           
 DATE OF MAXIMUM       1981-07-02            1980-12-16 1981-10-22           
 STANDARD DEVIATION           13.                   0.1       0.39           





                               pH   SUSP SOL         Na         Na         Mg
                                     105 DEG      TOTAL       DISS      TOTAL
                            10302      10401      11001      11105      12002
                         pH UNITS       mg/L    mg/L Na    mg/L Na    mg/L Mg


 NO. OF L-FLAGGED VALUES        0          2          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      101         99          1         48          1
 MEAN                         8.2        24.        35.        28.        11.
 MINIMUM                      7.4         1.                   17.           
 DATE OF MINIMUM       1981-05-05 1980-11-11            1981-05-28           
 10TH PERCENTILE              7.9         5.                   21.           
 MEDIAN                       8.1        12.                   28.           
 90TH PERCENTILE              8.7        57.                   36.           
 MAXIMUM                      9.2       236.                   42.           
 DATE OF MAXIMUM       1981-06-23 1981-12-15            1981-09-02           
 STANDARD DEVIATION           0.3        33.                    6.           




                               Mg         Si      PO4-P   SULPHATE         Cl
                             DISS   REACTIVE        SOL                  DISS
                            12102      14101      15254      16304      17201
                          mg/L Mg   mg/LSiO2   mg/L PO4   mg/L SO4    mg/L Cl


 NO. OF L-FLAGGED VALUES        0          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       48        101        100          1          1
 MEAN                          5.      11.31      1.085       155.        48.
 MINIMUM                       4.       0.35      0.031                      
 DATE OF MINIMUM       1981-09-28 1980-07-22 1980-07-22                      
 10TH PERCENTILE               5.       6.36      0.521                      
 MEDIAN                        5.      12.20      0.980                      
 90TH PERCENTILE               6.      13.98      1.858                      
 MAXIMUM                       7.      14.70      2.390                      
 DATE OF MAXIMUM       1981-01-21 1981-10-05 1981-09-10                      
 STANDARD DEVIATION            1.       2.96      0.505                      




                               Cl    P,P-DDT    P,P-DDE   DIELDRIN          K
                             DISS                                       TOTAL
                            17203      18000      18020      18150      19001
                          mg/L Cl       ug/L       ug/L       ug/L     mg/L K


 NO. OF L-FLAGGED VALUES        0         99        100         84          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      100          1          0         16          1
 MEAN                         36.      0.050      0.020      0.006        7.5
 MINIMUM                      20.      0.050      0.020      0.005           
 DATE OF MINIMUM       1981-06-03 1980-01-02 1980-01-02 1980-01-02           
 10TH PERCENTILE              30.      0.050      0.020      0.005           
 MEDIAN                       36.      0.050      0.020      0.005           
 90TH PERCENTILE              44.      0.050      0.020      0.006           
 MAXIMUM                      63.      0.050      0.020      0.106           
 DATE OF MAXIMUM       1981-12-15 1981-12-30 1981-12-30 1980-10-27           
 STANDARD DEVIATION            6.      0.000      0.000      0.010           




                                K         Ca         Cr         Mn         Fe
                             DISS      TOTAL      TOTAL      TOTAL      TOTAL
                            19105      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         53          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       48          1          1         25          1
 MEAN                         6.6    108.000      0.010       0.03       0.13
 MINIMUM                      1.9                 0.010       0.01           
 DATE OF MINIMUM       1981-06-23            1980-01-02 1981-11-03           
 10TH PERCENTILE              3.5                 0.010       0.02           
 MEDIAN                       5.8                 0.010       0.02           
 90TH PERCENTILE              8.2                 0.010       0.04           
 MAXIMUM                     39.0                 0.030       0.17           
 DATE OF MAXIMUM       1980-01-21            1980-08-13 1981-12-15           
 STANDARD DEVIATION           5.0                 0.003       0.03           




                               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       46         43          1         48         76
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8         11         54          6          1
 MEAN                       0.011      0.010      0.037      0.001      0.494
 MINIMUM                    0.010      0.010      0.010      0.001      0.050
 DATE OF MINIMUM       1980-01-02 1980-01-02 1980-08-13 1980-01-02 1980-01-02
 10TH PERCENTILE            0.010      0.010      0.020      0.001      0.500
 MEDIAN                     0.010      0.010      0.030      0.001      0.500
 90TH PERCENTILE            0.010      0.010      0.045      0.001      0.500
 MAXIMUM                    0.040      0.020      0.500      0.002      0.500
 DATE OF MAXIMUM       1980-08-13 1981-03-12 1981-04-14 1980-01-31 1981-12-30
 STANDARD DEVIATION         0.005      0.001      0.065      0.000      0.051




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


 NO. OF L-FLAGGED VALUES        3         45          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        0          4         97
 MEAN                       0.500      0.013       65.8
 MINIMUM                               0.010        0.8
 DATE OF MINIMUM                  1980-01-02 1981-08-25
 10TH PERCENTILE                       0.010        2.4
 MEDIAN                                0.010       48.7
 90TH PERCENTILE                       0.010      141.2
 MAXIMUM                               0.110      294.6
 DATE OF MAXIMUM                  1981-03-12 1981-12-15
 STANDARD DEVIATION                    0.015       66.2





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1980-01-10 TO 1981-12-30

 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          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        8         13         17         10         17
 MEAN                        632.       10.1       6.82       0.10       0.46
 MINIMUM                     567.        4.0       5.02       0.06       0.09
 DATE OF MINIMUM       1980-11-12 1980-01-10 1980-08-14 1980-04-11 1980-05-15
 10TH PERCENTILE                         4.2       5.43       0.06       0.11
 MEDIAN                      630.        9.0       7.00       0.09       0.50
 90TH PERCENTILE                        16.0       7.57       0.10       0.76
 MAXIMUM                     720.       18.0       8.90       0.23       0.93
 DATE OF MAXIMUM       1980-10-09 1981-08-20 1980-01-10 1980-09-11 1981-09-23
 STANDARD DEVIATION           52.        4.5       0.95       0.05       0.24




                               O2        BOD         pH   SUSP SOL         Si
                             DISS                          105 DEG   REACTIVE
                            08101      08201      10302      10401      14101
                          mg/L O2    mg/L O2   pH UNITS       mg/L   mg/LSiO2


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          2         17         17         16
 MEAN                        10.1         2.        8.1        21.       3.95
 MINIMUM                                            7.7         5.       0.20
 DATE OF MINIMUM                             1980-08-14 1980-01-10 1980-05-15
 10TH PERCENTILE                                    7.7         5.       0.34
 MEDIAN                                             8.0        14.       4.30
 90TH PERCENTILE                                    8.2        26.       5.26
 MAXIMUM                                            8.9       148.       5.58
 DATE OF MAXIMUM                             1980-05-15 1981-12-30 1980-08-14
 STANDARD DEVIATION                                 0.3        33.       1.56




                            PO4-P         Cl         Cr         Mn         Fe
                              SOL       DISS      TOTAL      TOTAL      TOTAL
                            15254      17203      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         12          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       17         17          5         16         17
 MEAN                       0.885        37.      0.003       0.07       0.56
 MINIMUM                    0.300        26.      0.002       0.01       0.09
 DATE OF MINIMUM       1980-04-11 1980-04-11 1980-04-11 1981-04-23 1981-04-23
 10TH PERCENTILE            0.342        27.      0.002       0.01       0.14
 MEDIAN                     0.710        38.      0.002       0.03       0.29
 90TH PERCENTILE            1.400        47.      0.004       0.11       0.79
 MAXIMUM                    1.750        53.      0.014       0.54       3.35
 DATE OF MAXIMUM       1980-09-11 1980-09-11 1980-05-15 1981-08-20 1981-12-30
 STANDARD DEVIATION         0.457         8.      0.003       0.13       0.76




                               Ni         Cu         Cd         Pb       INST
                            TOTAL      TOTAL      TOTAL      TOTAL     DISCHG
                            28001      29006      48001      82001      97160
                          mg/L Ni    mg/L Cu    mg/L Cd    mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES        8          0          7          8          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        9         16         10          9         17
 MEAN                       0.003      0.019      0.001      0.005       21.8
 MINIMUM                    0.001      0.007      0.000      0.001        3.9
 DATE OF MINIMUM       1980-01-10 1980-07-09 1980-01-10 1980-12-17 1980-09-11
 10TH PERCENTILE            0.001      0.007      0.000      0.002        5.2
 MEDIAN                     0.002      0.010      0.000      0.002       10.7
 90TH PERCENTILE            0.004      0.032      0.001      0.012       27.1
 MAXIMUM                    0.006      0.098      0.002      0.023      165.9
 DATE OF MAXIMUM       1981-09-23 1981-08-20 1980-07-09 1981-12-30 1981-12-30
 STANDARD DEVIATION         0.001      0.023      0.000      0.006       37.8





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1980-01-16 TO 1981-12-15

 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       47         47         45         47         46
 MEAN                        158.       11.0         7.     0.0046       2.15
 MINIMUM                     110.        3.5         4.     0.0010       1.40
 DATE OF MINIMUM       1980-01-25 1980-01-16 1981-02-14 1980-03-13 1980-08-08
 10TH PERCENTILE             129.        5.1         4.     0.0014       1.60
 MEDIAN                      151.       10.0         7.     0.0030       2.10
 90TH PERCENTILE             194.       17.0        11.     0.0096       2.70
 MAXIMUM                     271.       21.5        14.     0.0196       3.80
 DATE OF MAXIMUM       1981-09-10 1980-06-03 1981-06-06 1980-05-02 1980-01-25
 STANDARD DEVIATION           31.        4.5         3.     0.0040       0.48




                              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        4          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       43         47         46         47         47
 MEAN                        0.05       11.2         2.         2.       0.78
 MINIMUM                     0.01        9.0         0.         1.       0.40
 DATE OF MINIMUM       1980-04-07 1980-06-03 1981-09-26 1980-03-22 1981-12-15
 10TH PERCENTILE             0.01        9.6         1.         1.       0.57
 MEDIAN                      0.04       11.4         1.         2.       0.70
 90TH PERCENTILE             0.09       13.0         2.         3.       1.10
 MAXIMUM                     0.19       13.6         4.         5.       1.40
 DATE OF MAXIMUM       1980-06-28 1981-04-19 1980-06-28 1980-06-28 1981-09-10
 STANDARD DEVIATION          0.03        1.3         1.         1.       0.22




                               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       47         47         47         47         47
 MEAN                         7.3         9.        10.         4.       3.99
 MINIMUM                      6.8         1.         7.         3.       1.40
 DATE OF MINIMUM       1980-12-28 1980-03-22 1980-10-09 1981-10-12 1981-04-19
 10TH PERCENTILE              7.1         2.         8.         3.       2.29
 MEDIAN                       7.3         5.         9.         4.       4.20
 90TH PERCENTILE              7.5        19.        12.         5.       4.86
 MAXIMUM                      8.7        72.        22.         6.       5.30
 DATE OF MAXIMUM       1981-04-19 1981-12-15 1981-09-10 1981-09-10 1981-08-09
 STANDARD DEVIATION           0.3        12.         3.         1.       0.93




                            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         11         11         11
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       47         47          0          0          0
 MEAN                       0.097        16.      0.005      0.003      0.001
 MINIMUM                    0.030         9.      0.005      0.003      0.001
 DATE OF MINIMUM       1980-01-25 1981-10-12 1980-03-13 1980-03-13 1980-03-13
 10TH PERCENTILE            0.040        13.      0.005      0.003      0.001
 MEDIAN                     0.060        16.      0.005      0.003      0.001
 90TH PERCENTILE            0.166        20.      0.005      0.003      0.001
 MAXIMUM                    0.360        29.      0.005      0.003      0.001
 DATE OF MAXIMUM       1980-12-28 1981-09-10 1981-12-15 1981-12-15 1981-12-15
 STANDARD DEVIATION         0.076         3.      0.000      0.000      0.000




                         DIELDRIN        BHC          K          K         Ca
                                                   DISS       DISS       DISS
                            18150      18814      19102      19103      20103
                             ug/L       ug/L     mg/L K     mg/L K    mg/L Ca


 NO. OF L-FLAGGED VALUES       11          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         11          1         46         47
 MEAN                       0.003      0.007        2.2        1.9     15.913
 MINIMUM                    0.003      0.002                   0.9     11.900
 DATE OF MINIMUM       1980-03-13 1981-01-29            1981-06-06 1980-09-23
 10TH PERCENTILE            0.003      0.002                   1.5     12.710
 MEDIAN                     0.003      0.006                   1.7     15.200
 90TH PERCENTILE            0.003      0.014                   2.8     21.150
 MAXIMUM                    0.003      0.014                   3.0     23.500
 DATE OF MAXIMUM       1981-12-15 1980-07-14            1981-08-09 1980-05-18
 STANDARD DEVIATION         0.000      0.004                   0.5      3.054




                               Cr         Mn         Fe         Ni         Cu
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            24002      25004      26004      28001      29006
                          mg/L Cr    mg/L Mn    mg/L Fe    mg/L Ni    mg/L Cu


 NO. OF L-FLAGGED VALUES        7          0          0          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       34         41         41         40         40
 MEAN                       0.002       0.04       0.35      0.002      0.004
 MINIMUM                    0.001       0.01       0.05      0.001      0.001
 DATE OF MINIMUM       1980-01-16 1980-07-14 1980-03-13 1980-03-13 1980-10-25
 10TH PERCENTILE            0.001       0.02       0.11      0.001      0.001
 MEDIAN                     0.002       0.03       0.25      0.002      0.003
 90TH PERCENTILE            0.004       0.05       0.59      0.003      0.007
 MAXIMUM                    0.006       0.17       2.00      0.010      0.013
 DATE OF MAXIMUM       1981-08-25 1981-12-15 1981-12-15 1981-05-21 1980-05-18
 STANDARD DEVIATION         0.001       0.03       0.32      0.002      0.003




                               Zn   FAEC COL       FAEC         Cd         Pb
                            TOTAL                 STREP      TOTAL      TOTAL
                            30004      36012      36102      48001      82001
                          mg/L Zn   No/100ml   No/100ml    mg/L Cd    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          0         22         21
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       41         27         25         19         20
 MEAN                       0.008      3546.       342.      0.000      0.001
 MINIMUM                    0.003       300.        24.      0.000      0.001
 DATE OF MINIMUM       1980-08-08 1981-01-29 1981-06-22 1980-01-16 1980-01-16
 10TH PERCENTILE            0.004       580.        32.      0.000      0.001
 MEDIAN                     0.007      1950.       210.      0.000      0.001
 90TH PERCENTILE            0.015     10200.       857.      0.000      0.002
 MAXIMUM                    0.019     13000.      1510.      0.001      0.006
 DATE OF MAXIMUM       1981-12-15 1980-07-30 1981-12-15 1980-06-28 1980-06-28
 STANDARD DEVIATION         0.004      3857.       390.      0.000      0.001




                             INST
                           DISCHG
                            97160
                             m3/S


 NO. OF L-FLAGGED VALUES        0
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES       45
 MEAN                        17.1
 MINIMUM                      1.6
 DATE OF MINIMUM       1981-09-10
 10TH PERCENTILE              2.6
 MEDIAN                      13.3
 90TH PERCENTILE             34.3
 MAXIMUM                    105.0
 DATE OF MAXIMUM       1981-12-15
 STANDARD DEVIATION          18.0





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1980-01-09 TO 1981-12-17

 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       46         47         15         43         47
 MEAN                        858.       13.3        0.5         5.       7.66
 MINIMUM                     570.        4.0        0.2         3.       5.20
 DATE OF MINIMUM       1981-04-28 1981-01-16 1981-03-18 1981-11-16 1981-01-16
 10TH PERCENTILE             646.        6.3        0.2         4.       6.20
 MEDIAN                      855.       13.0        0.4         6.       7.70
 90TH PERCENTILE            1053.       20.1        0.7         6.       8.89
 MAXIMUM                    1150.       22.0        0.8         8.      10.30
 DATE OF MAXIMUM       1981-08-06 1981-07-22 1980-08-04 1981-10-01 1980-05-02
 STANDARD DEVIATION          159.        5.4        0.2         1.       1.07




                              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        5          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       42         47         23         45         47
 MEAN                        0.31        9.9        0.4       3.14        7.6
 MINIMUM                     0.01        7.3        0.2       2.20        7.2
 DATE OF MINIMUM       1981-07-22 1981-08-21 1981-05-07 1981-04-28 1981-01-16
 10TH PERCENTILE             0.06        7.9        0.3       2.50        7.4
 MEDIAN                      0.22       10.1        0.4       3.20        7.6
 90TH PERCENTILE             0.59       11.3        0.5       3.60        7.8
 MAXIMUM                     1.11       11.8        0.5       3.90        8.0
 DATE OF MAXIMUM       1981-12-17 1980-01-16 1980-05-02 1981-08-21 1981-09-08
 STANDARD DEVIATION          0.27        1.3        0.1       0.44        0.2




                         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       47         21         23         22         43
 MEAN                         25.        69.        23.       5.91      1.250
 MINIMUM                       7.        39.        17.       1.60      0.440
 DATE OF MINIMUM       1980-05-15 1981-03-18 1981-01-16 1980-05-02 1981-04-28
 10TH PERCENTILE              10.        44.        18.       2.22      0.533
 MEDIAN                       17.        65.        22.       5.35      1.180
 90TH PERCENTILE              55.        93.        28.      10.16      1.921
 MAXIMUM                     108.       132.        29.      11.40      2.420
 DATE OF MAXIMUM       1981-10-01 1981-08-06 1981-09-08 1981-06-08 1981-09-08
 STANDARD DEVIATION           20.        24.         4.       2.85      0.530





                         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         22         17         22
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22         47          0          0          0
 MEAN                        172.        93.      0.023      0.012      0.010
 MINIMUM                      91.        50.      0.005      0.010      0.001
 DATE OF MINIMUM       1981-01-16 1980-11-18 1981-08-06 1980-01-09 1981-08-06
 10TH PERCENTILE             120.        57.      0.010      0.010      0.010
 MEDIAN                      171.        86.      0.010      0.010      0.010
 90TH PERCENTILE             216.       131.      0.050      0.020      0.010
 MAXIMUM                     256.       202.      0.050      0.020      0.010
 DATE OF MAXIMUM       1981-06-30 1981-12-17 1981-07-13 1981-06-22 1981-07-13
 STANDARD DEVIATION           41.        32.      0.019      0.004      0.002




                         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       22          6          0          0         18
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0         16         23         23         26
 MEAN                       0.012      0.040        8.9     95.122      0.020
 MINIMUM                    0.002      0.010        6.6      9.800      0.010
 DATE OF MINIMUM       1981-08-06 1980-05-02 1980-01-09 1980-06-09 1980-01-09
 10TH PERCENTILE            0.010      0.010        6.6     77.400      0.010
 MEDIAN                     0.010      0.030        8.4    100.000      0.020
 90TH PERCENTILE            0.020      0.076       11.5    112.200      0.030
 MAXIMUM                    0.020      0.130       12.5    120.000      0.030
 DATE OF MAXIMUM       1981-07-13 1981-08-06 1981-09-08 1981-06-30 1981-12-17
 STANDARD DEVIATION         0.005      0.030        1.9     21.476      0.009




                               Cr         Mn         Mn         Fe         Fe
                             DISS      TOTAL       DISS      TOTAL       DISS
                            24052      25004      25104      26004      26104
                          mg/L Cr    mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe


 NO. OF L-FLAGGED VALUES       26          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       17         10         10         10         10
 MEAN                       0.019       0.11       0.06       0.57       0.06
 MINIMUM                    0.010       0.06       0.02       0.31       0.03
 DATE OF MINIMUM       1980-01-09 1980-09-05 1980-08-04 1980-08-04 1980-06-09
 10TH PERCENTILE            0.010       0.06       0.02       0.31       0.03
 MEDIAN                     0.020       0.09       0.05       0.58       0.05
 90TH PERCENTILE            0.030       0.13       0.09       0.75       0.08
 MAXIMUM                    0.030       0.24       0.11       0.96       0.20
 DATE OF MAXIMUM       1981-12-17 1980-01-09 1980-01-09 1980-09-30 1980-01-09
 STANDARD DEVIATION         0.010       0.05       0.03       0.20       0.05



                               Ni         Ni         Cu         Cu         Zn
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            28001      28101      29006      29106      30004
                          mg/L Ni    mg/L Ni    mg/L Cu    mg/L Cu    mg/L Zn


 NO. OF L-FLAGGED VALUES       11         17          1          8          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       33         26         43         35         44
 MEAN                       0.027      0.025      0.026      0.021      0.071
 MINIMUM                    0.010      0.010      0.010      0.010      0.030
 DATE OF MINIMUM       1980-01-09 1980-01-09 1980-11-18 1980-08-06 1980-05-15
 10TH PERCENTILE            0.014      0.010      0.020      0.010      0.040
 MEDIAN                     0.030      0.030      0.030      0.020      0.065
 90TH PERCENTILE            0.030      0.030      0.030      0.030      0.110
 MAXIMUM                    0.040      0.040      0.050      0.050      0.170
 DATE OF MAXIMUM       1980-05-02 1980-05-02 1980-01-16 1980-01-16 1980-05-02
 STANDARD DEVIATION         0.008      0.009      0.007      0.007      0.031




                               Zn         As         Cd         Cd         Ba
                             DISS      TOTAL      TOTAL       DISS      TOTAL
                            30104      33003      48001      48101      80016
                          mg/L Zn    mg/L As    mg/L Cd    mg/L Cd    ug/L Hg


 NO. OF L-FLAGGED VALUES        0          1         25         27         20
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       43         21         18         16          2
 MEAN                       0.045      0.004      0.004      0.004      0.100
 MINIMUM                    0.020      0.001      0.000      0.000      0.100
 DATE OF MINIMUM       1980-05-15 1980-01-09 1981-07-13 1981-07-13 1980-01-09
 10TH PERCENTILE            0.020      0.001      0.000      0.000      0.100
 MEDIAN                     0.040      0.003      0.005      0.005      0.100
 90TH PERCENTILE            0.074      0.006      0.008      0.008      0.100
 MAXIMUM                    0.110      0.011      0.013      0.010      0.100
 DATE OF MAXIMUM       1980-05-02 1981-09-08 1981-06-30 1980-08-06 1981-12-04
 STANDARD DEVIATION         0.021      0.002      0.003      0.003      0.000




                               Pb         Pb       INST
                            TOTAL       DISS     DISCHG
                            82001      82101      97160
                          mg/L Pb    mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES        3         24          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       41         19         45
 MEAN                       0.018      0.030       99.2
 MINIMUM                    0.001      0.001       27.6
 DATE OF MINIMUM       1981-06-30 1981-06-22 1981-09-08
 10TH PERCENTILE            0.008      0.001       38.0
 MEDIAN                     0.012      0.010       77.5
 90TH PERCENTILE            0.030      0.010      181.3
 MAXIMUM                    0.100      1.000      391.3
 DATE OF MAXIMUM       1980-02-14 1981-01-16 1981-04-28
 STANDARD DEVIATION         0.016      0.152       73.7





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1980-01-12 TO 1981-06-30

 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          4         15
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       42         44         10          2          1
 MEAN                        257.        9.4        0.1      0.008      0.005
 MINIMUM                     127.        2.5        0.0      0.002      0.005
 DATE OF MINIMUM       1980-11-21 1980-01-20 1980-06-05 1981-01-30 1980-02-05
 10TH PERCENTILE             168.        3.9        0.0                 0.005
 MEDIAN                      248.        7.2        0.1      0.010      0.005
 90TH PERCENTILE             351.       15.7        0.1                 0.005
 MAXIMUM                     457.       19.1        0.2      0.012      0.005
 DATE OF MAXIMUM       1980-04-27 1980-06-05 1980-11-08 1981-02-01 1981-06-17
 STANDARD DEVIATION           77.        4.7        0.0      0.004      0.000




                         CHLORO A     NO3NO2      NO2-N        NH3         O2
                                                                         DISS
                            06711      07105      07207      07556      08101
                             mg/L     mg/L N     mg/L N     mg/L N    mg/L O2


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5         43         31         44         44
 MEAN                      0.0066       1.71       0.04       0.13       10.1
 MINIMUM                   0.0045       0.64       0.01       0.01        7.8
 DATE OF MINIMUM       1981-04-13 1980-09-30 1980-01-12 1980-11-21 1980-06-05
 10TH PERCENTILE                        0.98       0.01       0.05        8.1
 MEDIAN                    0.0061       1.64       0.03       0.11        9.9
 90TH PERCENTILE                        2.35       0.06       0.24       11.9
 MAXIMUM                   0.0088       2.84       0.09       0.33       15.1
 DATE OF MAXIMUM       1981-06-04 1981-04-13 1980-06-05 1980-01-20 1980-12-04
 STANDARD DEVIATION        0.0017       0.54       0.02       0.08        1.6




                              COD     PERM V          F        ALK         pH
                                                   DISS      TOTAL           
                            08301      08401      09105      10101      10302
                          mg/L O2    mg/L O2     mg/L F       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES        2          0         12          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2         41          3         42         42
 MEAN                         30.         3.        0.1       1.18        7.2
 MINIMUM                      25.         2.        0.1       0.40        6.2
 DATE OF MINIMUM       1980-04-14 1980-03-08 1980-07-01 1980-02-13 1980-06-18
 10TH PERCENTILE                          2.        0.1       0.70        6.8
 MEDIAN                       25.         3.        0.1       1.20        7.2
 90TH PERCENTILE                          4.        0.1       1.78        7.6
 MAXIMUM                      43.         6.        0.1       2.10        7.8
 DATE OF MAXIMUM       1980-02-05 1981-06-17 1980-05-10 1980-04-27 1980-10-13
 STANDARD DEVIATION            9.         1.        0.0       0.42        0.3




                         SUSP SOL         Na         Mg         Si      PO4-P
                          105 DEG       DISS      TOTAL   REACTIVE        SOL
                            10401      11103      12002      14101      15254
                             mg/L    mg/L Na    mg/L Mg   mg/LSiO2   mg/L PO4


 NO. OF L-FLAGGED VALUES        5          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       37         16         12         38         42
 MEAN                          7.        19.         5.       3.76      0.150
 MINIMUM                       1.         8.         3.       1.07      0.030
 DATE OF MINIMUM       1980-04-27 1980-02-05 1980-12-30 1980-05-10 1980-11-21
 10TH PERCENTILE               1.         8.         3.       1.67      0.060
 MEDIAN                        5.        19.         5.       3.74      0.145
 90TH PERCENTILE               8.        29.         6.       5.41      0.278
 MAXIMUM                      87.        38.         8.       5.99      0.330
 DATE OF MAXIMUM       1980-02-05 1980-04-14 1981-04-13 1980-03-16 1980-08-22
 STANDARD DEVIATION           13.         9.         2.       1.33      0.080




                         SULPHATE         Cl    P,P-DDT    P,P-DDE     ALDRIN
                                        DISS                                 
                            16304      17203      18000      18020      18130
                         mg/L SO4    mg/L Cl       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0          0          3          3          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       17         42          0          0          1
 MEAN                         33.        23.      0.004      0.002      0.001
 MINIMUM                      20.        11.                            0.001
 DATE OF MINIMUM       1981-03-18 1980-11-21                       1980-10-26
 10TH PERCENTILE              20.        14.                                 
 MEDIAN                       31.        22.                            0.001
 90TH PERCENTILE              49.        33.                                 
 MAXIMUM                      59.        39.                            0.001
 DATE OF MAXIMUM       1980-05-10 1980-04-27                       1981-06-17
 STANDARD DEVIATION           12.         7.                            0.000




                         DIELDRIN        BHC          K         Ca         Cr
                                                   DISS      TOTAL      TOTAL
                            18150      18814      19103      20003      24002
                             ug/L       ug/L     mg/L K    mg/L Ca    mg/L Cr


 NO. OF L-FLAGGED VALUES        3          1          0          0          9
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          2         16         12          6
 MEAN                       0.002      0.005        3.2     24.900      0.002
 MINIMUM                    0.001                   1.1     14.000      0.001
 DATE OF MINIMUM       1981-05-22            1980-12-30 1980-10-13 1980-05-10
 10TH PERCENTILE                                    1.2     15.200      0.001
 MEDIAN                     0.003                   2.8     23.500      0.001
 90TH PERCENTILE                                    4.4     31.760      0.003
 MAXIMUM                    0.003                   8.7     32.100      0.004
 DATE OF MAXIMUM       1980-11-21            1980-04-14 1981-06-30 1980-11-08
 STANDARD DEVIATION         0.001                   1.9      5.769      0.001




                               Cr         Mn         Mn         Fe         Fe
                             DISS      TOTAL       DISS      TOTAL       DISS
                            24052      25004      25104      26004      26104
                          mg/L Cr    mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe


 NO. OF L-FLAGGED VALUES        5          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1         17          6         17          5
 MEAN                       0.001       0.07       0.07       0.51       0.11
 MINIMUM                    0.001       0.02       0.01       0.18       0.00
 DATE OF MINIMUM       1980-04-14 1980-10-13 1980-04-14 1981-05-09 1980-04-14
 10TH PERCENTILE                        0.03                  0.19           
 MEDIAN                     0.001       0.06       0.06       0.34       0.12
 90TH PERCENTILE                        0.11                  0.56           
 MAXIMUM                    0.002       0.15       0.11       3.15       0.17
 DATE OF MAXIMUM       1980-06-05 1981-04-13 1980-08-22 1980-02-05 1980-07-01
 STANDARD DEVIATION         0.001       0.03       0.04       0.69       0.06




                               Ni         Ni         Cu         Cu         Zn
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            28001      28101      29006      29106      30004
                          mg/L Ni    mg/L Ni    mg/L Cu    mg/L Cu    mg/L Zn


 NO. OF L-FLAGGED VALUES        4          1          2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       12          5         15          6         17
 MEAN                       0.002      0.002      0.005      0.005      0.029
 MINIMUM                    0.001      0.001      0.001      0.003      0.001
 DATE OF MINIMUM       1980-04-14 1980-04-14 1981-01-25 1980-04-14 1981-05-09
 10TH PERCENTILE            0.001                 0.001                 0.007
 MEDIAN                     0.001      0.002      0.004      0.005      0.021
 90TH PERCENTILE            0.004                 0.009                 0.062
 MAXIMUM                    0.005      0.005      0.010      0.009      0.100
 DATE OF MAXIMUM       1981-06-04 1980-08-22 1981-06-30 1980-05-10 1981-02-20
 STANDARD DEVIATION         0.002      0.002      0.003      0.003      0.026




                               Zn         Cd         Cd         Ba         Pb
                             DISS      TOTAL       DISS      TOTAL      TOTAL
                            30104      48001      48101      80016      82001
                          mg/L Zn    mg/L Cd    mg/L Cd    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        1         12          5          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        5          3          1          2         16
 MEAN                       0.018      0.220      0.550      0.350      0.010
 MINIMUM                    0.001      0.001      0.001                 0.003
 DATE OF MINIMUM       1980-04-14 1980-02-05 1980-02-05            1980-10-13
 10TH PERCENTILE                       0.001                            0.003
 MEDIAN                     0.015      0.001      0.500                 0.006
 90TH PERCENTILE                       0.650                            0.021
 MAXIMUM                    0.038      1.000      1.000                 0.028
 DATE OF MAXIMUM       1980-02-05 1980-06-05 1980-06-05            1980-02-05
 STANDARD DEVIATION         0.013      0.345      0.339                 0.008




                               Pb
                             DISS
                            82101
                          mg/L Pb


 NO. OF L-FLAGGED VALUES        1
 NO. OF G-FLAGGED VALUES        0
 NO. OF UNFLAGGED VALUES        5
 MEAN                       0.008
 MINIMUM                    0.002
 DATE OF MINIMUM       1980-04-14
 10TH PERCENTILE                 
 MEDIAN                     0.006
 90TH PERCENTILE                 
 MAXIMUM                    0.020
 DATE OF MAXIMUM       1980-05-10
 STANDARD DEVIATION         0.006





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1980-01-15 TO 1981-12-09

 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         11          6
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         23         24          7         18
 MEAN                         64.        8.8       0.32       0.01       0.07
 MINIMUM                      50.        3.0       0.10       0.00       0.00
 DATE OF MINIMUM       1980-10-08 1980-01-15 1981-09-30 1981-07-23 1981-12-09
 10TH PERCENTILE              56.        3.3       0.15       0.00       0.01
 MEDIAN                       64.        8.0       0.31       0.01       0.02
 90TH PERCENTILE              70.       15.6       0.45       0.01       0.17
 MAXIMUM                      80.       17.0       0.60       0.05       0.36
 DATE OF MAXIMUM       1980-04-18 1980-08-15 1980-08-15 1981-01-14 1980-12-09
 STANDARD DEVIATION            7.        4.7       0.12       0.01       0.09




                               O2        BOD        ALK         pH   SUSP SOL
                             DISS                 TOTAL               105 DEG
                            08101      08201      10102      10302      10401
                          mg/L O2    mg/L O2       mg/L   pH UNITS       mg/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       23         22         21         23         24
 MEAN                        11.0         1.       0.33        7.2         6.
 MINIMUM                      9.4         0.       0.20        6.6         2.
 DATE OF MINIMUM       1980-09-08 1981-01-14 1981-01-14 1980-02-13 1980-03-13
 10TH PERCENTILE              9.5         0.       0.21        6.8         2.
 MEDIAN                      11.1         1.       0.30        7.1         4.
 90TH PERCENTILE             12.2         2.       0.40        7.7        10.
 MAXIMUM                     12.6         3.       0.50        8.1        43.
 DATE OF MAXIMUM       1980-04-18 1981-02-13 1980-08-15 1981-05-07 1981-03-10
 STANDARD DEVIATION           1.0         1.       0.07        0.4         8.




                            PO4-P         Cl    P,P-DDT    P,P-DDE     ALDRIN
                              SOL       DISS                                 
                            15254      17203      18000      18020      18130
                         mg/L PO4    mg/L Cl       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        7          0          1          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       16         22          0          0          0
 MEAN                       0.012         9.     17.400      0.400      0.300
 MINIMUM                    0.001         7.                                 
 DATE OF MINIMUM       1980-12-09 1981-04-06                                 
 10TH PERCENTILE            0.002         7.                                 
 MEDIAN                     0.010         9.                                 
 90TH PERCENTILE            0.026        11.                                 
 MAXIMUM                    0.050        14.                                 
 DATE OF MAXIMUM       1980-07-23 1981-02-13                                 
 STANDARD DEVIATION         0.013         2.                                 




                         DIELDRIN        BHC         Cr         Ni         Cu
                                                  TOTAL      TOTAL      TOTAL
                            18150      18814      24002      28001      29006
                             ug/L       ug/L    mg/L Cr    mg/L Ni    mg/L Cu


 NO. OF L-FLAGGED VALUES        1          1         24         24         15
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          9
 MEAN                       0.500      0.200      0.005      0.005      0.005
 MINIMUM                                          0.003      0.003      0.003
 DATE OF MINIMUM                             1981-07-23 1981-07-23 1981-11-27
 10TH PERCENTILE                                  0.003      0.003      0.003
 MEDIAN                                           0.005      0.005      0.005
 90TH PERCENTILE                                  0.005      0.005      0.007
 MAXIMUM                                          0.010      0.010      0.014
 DATE OF MAXIMUM                             1980-08-15 1980-08-15 1980-08-15
 STANDARD DEVIATION                               0.001      0.001      0.002




                               Zn         Cd         Pb       INST
                            TOTAL      TOTAL      TOTAL     DISCHG
                            30004      48001      82001      97160
                          mg/L Zn    mg/L Cd    mg/L Pb       m3/S


 NO. OF L-FLAGGED VALUES        1         24         19          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES       23          0          5         24
 MEAN                       0.016      0.979      0.006       44.7
 MINIMUM                    0.001      0.500      0.003        5.8
 DATE OF MINIMUM       1980-04-18 1981-07-23 1981-11-27 1980-05-13
 10TH PERCENTILE            0.008      0.500      0.004        6.3
 MEDIAN                     0.013      1.000      0.005       45.9
 90TH PERCENTILE            0.025      1.000      0.007       92.2
 MAXIMUM                    0.041      2.000      0.022      104.0
 DATE OF MAXIMUM       1980-08-15 1980-08-15 1981-03-10 1981-11-27
 STANDARD DEVIATION         0.009      0.275      0.004       31.4





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1980-01-03 TO 1981-12-16

 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          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       94         94         94         94         91
 MEAN                        683.       0.21       2.23       4.22        6.2
 MINIMUM                     300.       0.04       0.10       0.10        1.2
 DATE OF MINIMUM       1981-03-11 1981-08-19 1981-08-19 1980-10-29 1980-05-15
 10TH PERCENTILE             430.       0.08       1.62       1.35        3.2
 MEDIAN                      624.       0.16       2.25       3.45        5.9
 90TH PERCENTILE            1001.       0.42       2.80       8.05        9.0
 MAXIMUM                    1622.       0.62       3.15      12.10       10.6
 DATE OF MAXIMUM       1980-05-29 1980-09-24 1980-08-20 1980-06-05 1980-01-03
 STANDARD DEVIATION          250.       0.15       0.51       2.74        2.3




                              COD        ALK        ALK         pH   SUSP SOL
                                       TOTAL      TOTAL               105 DEG
                            08301      10101      10102      10302      10401
                          mg/L O2       mg/L       mg/L   pH UNITS       mg/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       94          1         92         94         94
 MEAN                         40.       1.60       2.21        7.2        25.
 MINIMUM                      25.                  0.90        6.9         5.
 DATE OF MINIMUM       1980-11-05            1980-10-08 1981-03-11 1981-06-17
 10TH PERCENTILE              28.                  1.32        7.1         9.
 MEDIAN                       38.                  2.20        7.2        17.
 90TH PERCENTILE              52.                  3.07        7.4        46.
 MAXIMUM                      83.                  3.70        7.6       171.
 DATE OF MAXIMUM       1981-11-18            1980-05-22 1980-04-03 1981-03-11
 STANDARD DEVIATION           10.                  0.66        0.1        27.




                               Si      PO4-P         Cl         Cr         Mn
                         REACTIVE        SOL       DISS      TOTAL      TOTAL
                            14101      15254      17201      24002      25004
                         mg/LSiO2   mg/L PO4    mg/L Cl    mg/L Cr    mg/L Mn


 NO. OF L-FLAGGED VALUES        0          0          0         24          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       79         93         90          0         92
 MEAN                        8.65      0.843        85.      0.020       0.26
 MINIMUM                     4.70      0.100        25.      0.020       0.15
 DATE OF MINIMUM       1981-10-28 1980-11-19 1980-11-19 1980-03-27 1981-10-28
 10TH PERCENTILE             7.20      0.200        43.      0.020       0.17
 MEDIAN                      8.70      0.700        76.      0.020       0.24
 90TH PERCENTILE             9.70      1.985       147.      0.020       0.38
 MAXIMUM                    18.90      2.750       260.      0.020       0.54
 DATE OF MAXIMUM       1981-09-16 1981-07-15 1980-05-29 1980-09-10 1980-12-03
 STANDARD DEVIATION          1.57      0.632        42.      0.000       0.08


                               Fe         Ni         Cu         Zn         Cd
                            TOTAL      TOTAL      TOTAL      TOTAL      TOTAL
                            26004      28001      29006      30004      48001
                          mg/L Fe    mg/L Ni    mg/L Cu    mg/L Zn    mg/L Cd


 NO. OF L-FLAGGED VALUES        0          3          0          0         30
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       92         50         65         86         30
 MEAN                        1.10      0.010      0.014      0.042      0.001
 MINIMUM                     0.36      0.005      0.003      0.011      0.000
 DATE OF MINIMUM       1980-05-29 1981-11-25 1981-05-20 1980-04-17 1980-10-15
 10TH PERCENTILE             0.60      0.008      0.005      0.024      0.000
 MEDIAN                      0.99      0.010      0.011      0.038      0.001
 90TH PERCENTILE             1.67      0.013      0.023      0.070      0.002
 MAXIMUM                     3.95      0.017      0.095      0.137      0.002
 DATE OF MAXIMUM       1981-03-11 1981-09-09 1980-01-10 1981-11-18 1981-06-24
 STANDARD DEVIATION          0.54      0.002      0.013      0.020      0.001




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


 NO. OF L-FLAGGED VALUES       43         11          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       40         55         64
 MEAN                       0.133      0.016       54.6
 MINIMUM                    0.100      0.003        3.4
 DATE OF MINIMUM       1980-01-03 1980-10-01 1981-02-11
 10TH PERCENTILE            0.100      0.005       13.5
 MEDIAN                     0.100      0.015       44.6
 90TH PERCENTILE            0.200      0.027      114.2
 MAXIMUM                    0.500      0.067      185.4
 DATE OF MAXIMUM       1981-10-21 1981-03-11 1981-01-14
 STANDARD DEVIATION         0.077      0.011       42.9





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1980-01-09 TO 1981-12-30

 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      100        102        102        102        102
 MEAN                         8.2       1.18       0.08       11.1         2.
 MINIMUM                      0.0       0.50       0.02        8.6         1.
 DATE OF MINIMUM       1981-12-16 1981-06-10 1980-03-26 1980-06-06 1981-12-16
 10TH PERCENTILE              2.5       0.71       0.04        9.6         1.
 MEDIAN                       8.0       1.10       0.07       11.3         2.
 90TH PERCENTILE             14.0       1.59       0.12       12.6         3.
 MAXIMUM                     17.0       3.70       0.21       13.5         4.
 DATE OF MAXIMUM       1981-07-09 1981-01-26 1980-06-13 1981-04-23 1980-05-07
 STANDARD DEVIATION           4.5       0.44       0.03        1.2         1.




                           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      102        102        101        102        102
 MEAN                          3.        7.5         8.         8.        10.
 MINIMUM                       1.        6.2         0.         4.         6.
 DATE OF MINIMUM       1980-04-10 1980-12-23 1981-09-14 1980-05-30 1980-09-12
 10TH PERCENTILE               1.        6.6         2.         5.         8.
 MEDIAN                        2.        7.5         3.         8.        10.
 90TH PERCENTILE               5.        8.1        12.        11.        12.
 MAXIMUM                      13.        8.8       194.        14.        19.
 DATE OF MAXIMUM       1981-10-02 1981-05-21 1981-10-02 1981-08-21 1981-12-30
 STANDARD DEVIATION            2.        0.5        21.         2.         2.




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


 NO. OF L-FLAGGED VALUES        0          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES       45        102
 MEAN                       3942.       36.7
 MINIMUM                       0.        5.7
 DATE OF MINIMUM       1980-01-17 1981-09-07
 10TH PERCENTILE              10.        9.0
 MEDIAN                      600.       24.4
 90TH PERCENTILE           11800.       79.2
 MAXIMUM                   44000.      463.6
 DATE OF MAXIMUM       1980-09-04 1981-10-02
 STANDARD DEVIATION         8212.       50.3





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1980-01-07 TO 1981-12-09

 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         22          1          7
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       11         22          1         21         16
 MEAN                         49.        8.6       0.01       0.05       0.01
 MINIMUM                      27.        0.0       0.01       0.01       0.00
 DATE OF MINIMUM       1981-11-11 1980-02-05 1980-01-07 1980-10-27 1980-07-28
 10TH PERCENTILE              32.        2.5       0.01       0.02       0.00
 MEDIAN                       48.        8.5       0.01       0.05       0.01
 90TH PERCENTILE              58.       14.1       0.01       0.07       0.03
 MAXIMUM                      79.       15.5       0.01       0.14       0.04
 DATE OF MAXIMUM       1981-09-22 1980-06-05 1981-12-09 1981-03-02 1981-03-02
 STANDARD DEVIATION           11.        4.4       0.00       0.03       0.01




                               O2        BOD        COD        ALK         pH
                             DISS                            TOTAL           
                            08101      08201      08301      10102      10302
                          mg/L O2    mg/L O2    mg/L O2       mg/L   pH UNITS


 NO. OF L-FLAGGED VALUES        0          0          5          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       23         23         18         23         23
 MEAN                        11.4         1.        11.       0.17        6.8
 MINIMUM                      9.4         0.         4.       0.10        6.2
 DATE OF MINIMUM       1980-08-11 1980-02-05 1981-06-17 1980-02-05 1981-02-02
 10TH PERCENTILE              9.8         0.         4.       0.10        6.3
 MEDIAN                      11.4         1.         9.       0.20        6.7
 90TH PERCENTILE             12.6         1.        18.       0.20        7.2
 MAXIMUM                     13.4         2.        34.       0.50        7.5
 DATE OF MAXIMUM       1980-02-05 1980-06-05 1980-11-19 1981-11-11 1981-01-07
 STANDARD DEVIATION           1.1         0.         7.       0.09        0.4




                         SUSP SOL         Cl         Cu         Zn         Cd
                          105 DEG       DISS      TOTAL      TOTAL      TOTAL
                            10401      17204      29006      30004      48001
                             mg/L    mg/L Cl    mg/L Cu    mg/L Zn    mg/L Cd


 NO. OF L-FLAGGED VALUES        2          0         10          1          4
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21         22          3         12          9
 MEAN                          2.        10.      0.016      0.005      0.001
 MINIMUM                       0.         2.      0.012      0.001      0.000
 DATE OF MINIMUM       1981-03-02 1981-09-22 1981-09-22 1981-07-01 1980-11-19
 10TH PERCENTILE               0.         6.      0.013      0.001      0.000
 MEDIAN                        1.         9.      0.016      0.003      0.000
 90TH PERCENTILE               3.        14.      0.016      0.010      0.001
 MAXIMUM                       7.        15.      0.017      0.021      0.003
 DATE OF MAXIMUM       1980-06-05 1981-02-02 1981-11-11 1981-11-11 1981-05-12
 STANDARD DEVIATION            2.         3.      0.001      0.006      0.001




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


 NO. OF L-FLAGGED VALUES       13          8          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES        0          5         23
 MEAN                       0.047      0.010       12.4
 MINIMUM                    0.001      0.005        0.7
 DATE OF MINIMUM       1980-11-19 1981-06-17 1980-05-12
 10TH PERCENTILE            0.001      0.006        1.7
 MEDIAN                     0.001      0.009        7.0
 90TH PERCENTILE            0.100      0.013       35.5
 MAXIMUM                    0.100      0.017       40.7
 DATE OF MAXIMUM       1981-12-09 1981-07-01 1980-11-19
 STANDARD DEVIATION         0.051      0.003       13.4





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1980-01-02 TO 1981-12-22

 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       99         93         93         97         74
 MEAN                          1.       297.       0.46        8.5         8.
 MINIMUM                       1.       256.       0.00        7.7         2.
 DATE OF MINIMUM       1980-01-02 1981-12-22 1980-07-21 1980-01-02 1980-12-15
 10TH PERCENTILE               1.       273.       0.01        8.0         3.
 MEDIAN                        1.       297.       0.31        8.3         7.
 90TH PERCENTILE               1.       316.       1.23        9.3        14.
 MAXIMUM                       1.       358.       1.71        9.5        17.
 DATE OF MAXIMUM       1981-12-22 1981-09-08 1981-03-23 1980-05-19 1981-05-05
 STANDARD DEVIATION            0.        19.       0.49        0.5         4.




                               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       74         95
 MEAN                        5.91      0.060
 MINIMUM                     0.09      0.000
 DATE OF MINIMUM       1981-05-18 1980-05-13
 10TH PERCENTILE             0.55      0.002
 MEDIAN                      7.32      0.069
 90TH PERCENTILE             9.44      0.092
 MAXIMUM                    11.70      0.350
 DATE OF MAXIMUM       1980-02-18 1980-07-21
 STANDARD DEVIATION          3.51      0.045





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1980-01-02 TO 1981-12-29

 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          3
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       97         94         91         97         94
 MEAN                        672.       10.4    10.8707       1.73       0.02
 MINIMUM                     637.        3.0     1.0000       1.00       0.01
 DATE OF MINIMUM       1981-08-25 1980-01-02 1980-06-10 1980-10-14 1980-01-22
 10TH PERCENTILE             642.        4.0     4.2000       1.19       0.01
 MEDIAN                      677.        9.2    10.4000       1.63       0.02
 90TH PERCENTILE             691.       18.0    17.7000       2.30       0.04
 MAXIMUM                     727.       19.0    37.2000       3.10       0.09
 DATE OF MAXIMUM       1980-01-22 1981-08-18 1980-09-16 1981-12-22 1981-08-11
 STANDARD DEVIATION           19.        5.0     6.2476       0.45       0.01




                              NH3         O2        BOD     PERM V          F
                                        DISS                             DISS
                            07555      08101      08201      08401      09105
                           mg/L N    mg/L O2    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES       43          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       54         94         58         89          4
 MEAN                        0.07       10.8         2.         3.        0.3
 MINIMUM                     0.05        8.0         1.         1.        0.3
 DATE OF MINIMUM       1980-02-19 1981-08-11 1980-08-26 1980-04-29 1980-08-19
 10TH PERCENTILE             0.05        9.0         1.         2.           
 MEDIAN                      0.05       10.8         2.         3.        0.3
 90TH PERCENTILE             0.11       12.4         2.         4.           
 MAXIMUM                     0.17       13.1         3.         6.        0.3
 DATE OF MAXIMUM       1981-05-05 1981-01-27 1981-02-17 1981-08-18 1980-07-01
 STANDARD DEVIATION          0.03        1.3         0.         1.        0.0




                              ALK         pH   SUSP SOL         Na         Mg
                            TOTAL               105 DEG      TOTAL      TOTAL
                            10102      10302      10401      11001      12002
                             mg/L   pH UNITS       mg/L    mg/L Na    mg/L Mg


 NO. OF L-FLAGGED VALUES        0          0         67          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       97         97         29         92         92
 MEAN                        3.40        8.3         6.        33.        11.
 MINIMUM                     3.10        8.0         5.        29.        10.
 DATE OF MINIMUM       1980-02-19 1981-04-28 1980-10-07 1981-07-14 1981-06-02
 10TH PERCENTILE             3.20        8.2         5.        30.        11.
 MEDIAN                      3.40        8.3         5.        33.        11.
 90TH PERCENTILE             3.60        8.4         8.        36.        11.
 MAXIMUM                     3.80        8.5        26.        38.        12.
 DATE OF MAXIMUM       1980-12-30 1980-07-22 1980-04-29 1980-01-02 1980-08-12
 STANDARD DEVIATION          0.14        0.1         3.         2.         0.




                               Si      PO4-P   SULPHATE         Cl          K
                         REACTIVE        SOL                  DISS      TOTAL
                            14101      15254      16304      17201      19001
                         mg/LSiO2   mg/L PO4   mg/L SO4    mg/L Cl     mg/L K


 NO. OF L-FLAGGED VALUES        0         62          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       96         31         96         97         92
 MEAN                        0.76      0.037       149.        47.        7.2
 MINIMUM                     0.06      0.030       137.        41.        6.2
 DATE OF MINIMUM       1980-02-26 1980-03-04 1981-03-24 1981-06-23 1981-04-22
 10TH PERCENTILE             0.26      0.030       143.        44.        6.6
 MEDIAN                      0.63      0.031       150.        47.        7.3
 90TH PERCENTILE             1.51      0.056       156.        51.        7.7
 MAXIMUM                     2.07      0.100       163.        56.        8.1
 DATE OF MAXIMUM       1980-11-11 1981-12-08 1980-01-08 1980-01-29 1980-01-08
 STANDARD DEVIATION          0.48      0.012         5.         3.        0.5




                               Ca         Mn         Fe       INST
                            TOTAL      TOTAL      TOTAL     DISCHG
                            20003      25004      26004      97160
                          mg/L Ca    mg/L Mn    mg/L Fe       m3/S


 NO. OF L-FLAGGED VALUES        0         40          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES       91         51         90         97
 MEAN                     105.733       0.04       0.19        1.2
 MINIMUM                   98.600       0.03       0.04        0.9
 DATE OF MINIMUM       1981-10-13 1980-01-02 1981-10-06 1981-06-30
 10TH PERCENTILE          101.000       0.03       0.07        1.0
 MEDIAN                   106.000       0.03       0.16        1.3
 90TH PERCENTILE          109.000       0.06       0.38        1.3
 MAXIMUM                  112.000       0.15       0.71        1.7
 DATE OF MAXIMUM       1980-09-02 1980-09-23 1980-02-19 1980-02-19
 STANDARD DEVIATION         3.052       0.02       0.13        0.1





 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1980-01-08 TO 1980-01-08

 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          0          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          1          1          0          0
 MEAN                        100.        1.5        0.0      0.010      0.010
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                         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        0          0          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          1          0          1          1
 MEAN                      1.3000       0.72       0.01       0.08       13.6
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                           PERM V          F        ALK         pH   SUSP SOL
                                        DISS      TOTAL               105 DEG
                            08401      09105      10102      10302      10401
                          mg/L O2     mg/L F       mg/L   pH UNITS       mg/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          1          1          1          1
 MEAN                          4.        0.2       0.30        6.8         3.
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          





                               Na         Mg         Si      PO4-P          P
                             DISS       DISS   REACTIVE        SOL      TOTAL
                            11105      12102      14101      15254      15405
                          mg/L Na    mg/L Mg   mg/LSiO2   mg/L PO4     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          1          1          0          1
 MEAN                          5.         4.       4.60      0.010      0.030
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                         SULPHATE         Cl    P,P-DDT    P,P-DDE     ALDRIN
                                        DISS                                 
                            16301      17203      18000      18020      18130
                         mg/L SO4    mg/L Cl       ug/L       ug/L       ug/L


 NO. OF L-FLAGGED VALUES        0          0          1          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          1          0          0          0
 MEAN                         32.        16.      2.500      0.700      0.500
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                         DIELDRIN        BHC          K         Ca         Cr
                                                   DISS       DISS      TOTAL
                            18150      18814      19105      20103      24002
                             ug/L       ug/L     mg/L K    mg/L Ca    mg/L Cr


 NO. OF L-FLAGGED VALUES        1          1          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          1          1          0
 MEAN                       0.700      0.200        1.0      8.000      0.020
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               Cr         Mn         Mn         Fe         Fe
                             DISS      TOTAL       DISS      TOTAL       DISS
                            24052      25004      25104      26004      26104
                          mg/L Cr    mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe


 NO. OF L-FLAGGED VALUES        1          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          1          1          1          1
 MEAN                       0.020       0.24       0.24       0.40       0.23
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               Ni         Ni         Cu         Cu         Zn
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            28001      28101      29006      29106      30004
                          mg/L Ni    mg/L Ni    mg/L Cu    mg/L Cu    mg/L Zn


 NO. OF L-FLAGGED VALUES        1          1          1          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          1
 MEAN                       0.020      0.020      0.010      0.010      0.040
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               Zn         As         As         Se         Se
                             DISS      TOTAL       DISS      TOTAL       DISS
                            30104      33003      33104      34002      34102
                          mg/L Zn    mg/L As    mg/L As    mg/L Se    mg/L Se


 NO. OF L-FLAGGED VALUES        0          1          1          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          0          0          0          0
 MEAN                       0.040      0.010      0.010      0.100      0.010
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                             FAEC         Cd         Cd         Ba         Hg
                            STREP      TOTAL       DISS      TOTAL       DISS
                            36102      48001      48101      80011      80111
                         No/100ml    mg/L Cd    mg/L Cd    ug/L Hg    ug/L Hg


 NO. OF L-FLAGGED VALUES        0          1          1          1          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1          0          0          0          0
 MEAN                          4.      1.000      1.000      1.000      1.000
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               Pb         Pb
                            TOTAL       DISS
                            82001      82101
                          mg/L Pb    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        1          1
 MEAN                       0.030      0.030
 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  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1981-10-12 TO 1981-11-02

 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          2          2          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2          0          0          2          2
 MEAN                        302.       0.01       0.01        0.1       2.05
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               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        2          2          2          2          2
 MEAN                         8.1        10.        16.       8.25        16.
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               Cl          K         Ca         Cr         Fe
                             DISS      TOTAL       DISS      TOTAL      TOTAL
                            17201      19001      20101      24002      26002
                          mg/L Cl     mg/L K    mg/L Ca    mg/L Cr    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          1          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        2          2          2          0          2
 MEAN                         20.        1.8     32.900      0.010       0.03
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               Cu         Zn         As   FAEC COL         Cd
                            TOTAL      TOTAL      TOTAL                 TOTAL
                            29006      30004      33003      36012      48001
                          mg/L Cu    mg/L Zn    mg/L As   No/100ml    mg/L Cd


 NO. OF L-FLAGGED VALUES        2          1          1          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        0          0          0          0          0
 MEAN                       0.010      0.010      0.005         0.      0.600
 MINIMUM                                                                     
 DATE OF MINIMUM                                                             
 10TH PERCENTILE                                                             
 MEDIAN                                                                      
 90TH PERCENTILE                                                             
 MAXIMUM                                                                     
 DATE OF MAXIMUM                                                             
 STANDARD DEVIATION                                                          




                               Ba         Pb
                            TOTAL      TOTAL
                            56001      82001
                          mg/L Ba    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          1
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES        1          0
 MEAN                         0.0      0.005
 MINIMUM                                    
 DATE OF MINIMUM                            
 10TH PERCENTILE                            
 MEDIAN                                     
 90TH PERCENTILE                            
 MAXIMUM                                    
 DATE OF MAXIMUM                            
 STANDARD DEVIATION                         



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GEMS/WATER
URL of this page: http://www.cciw.ca/summary79/uk79-e.html
Last updated: 2001-07-30