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STATISTICS for NETHERLANDS

STATISTICS FOR THE NETHERLANDS


GEMS/WATER - STATISTICAL SUMMARY BY STATION     2002-02-15   PAGE 442

 STATION - RHINE RIVER AT GERMAN FRONTIER           STATION NO. 046001
 COUNTRY - NETHERLANDS                              DEPTH(M)       7.0
 LOCATION - OCT. 3  LAT. 51/51/06  LONG. 006/06/06  ELEVATION(M)  10.5
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-01 TO 1981-12-31

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP         Li         Li        TOC
                             COND                 TOTAL       DISS           
                            02041      02061      03001      03101      06001
                            us/cm      deg C    mg/L Li    mg/L Li     mg/L C


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      154        271         52          6        245
 MEAN                        825.       12.2        0.0        0.0         9.
 MINIMUM                     440.        0.0        0.0        0.0         5.
 DATE OF MINIMUM       1980-07-23 1979-01-02 1980-07-23 1979-03-12 1981-11-11
 10TH PERCENTILE             604.        4.4        0.0                    7.
 MEDIAN                      830.       11.8        0.0        0.0         9.
 90TH PERCENTILE            1050.       19.5        0.0                   12.
 MAXIMUM                    1260.       22.1        0.0        0.0        14.
 DATE OF MAXIMUM       1979-09-23 1979-07-29 1980-10-15 1979-01-31 1979-01-02
 STANDARD DEVIATION          163.        6.0        0.0        0.0         2.




                          PHENOLS         CN   CHLORO A     N KJEL     NO3NO2
                                                                             
                            06532      06606      06711      07004      07105
                             mg/L    mg/L Cn       mg/L     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      114          2        130        270        270
 MEAN                       0.009      0.012     0.0417        1.9       3.90
 MINIMUM                    0.001                0.0019        0.9       2.72
 DATE OF MINIMUM       1980-02-26            1980-01-09 1981-07-30 1981-08-05
 10TH PERCENTILE            0.005                0.0030        1.3       3.16
 MEDIAN                     0.008                0.0202        1.7       3.96
 90TH PERCENTILE            0.015                0.0990        2.7       4.58
 MAXIMUM                    0.048                0.2040        4.4       5.08
 DATE OF MAXIMUM       1979-01-11            1979-08-01 1979-01-31 1979-01-02
 STANDARD DEVIATION         0.006                0.0455        0.6       0.52




                              NH3         O2        BOD        COD     PERM V
                                        DISS                                 
                            07555      08101      08201      08301      08401
                           mg/L N    mg/L O2    mg/L O2    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      155        113        116         57         49
 MEAN                        0.75        8.4         3.        22.        14.
 MINIMUM                     0.09        4.9         1.        14.         4.
 DATE OF MINIMUM       1981-06-18 1981-08-13 1980-02-26 1981-03-26 1981-03-26
 10TH PERCENTILE             0.28        6.2         2.        16.         4.
 MEDIAN                      0.59        8.1         3.        21.         8.
 90TH PERCENTILE             1.45       10.5         5.        28.        23.
 MAXIMUM                     2.99       11.7         7.        41.        40.
 DATE OF MAXIMUM       1979-01-31 1981-12-23 1981-05-13 1979-02-06 1980-12-18
 STANDARD DEVIATION          0.51        1.6         1.         5.         9.






                                F         pH   SUSP SOL       TENS         Na
                             DISS               105 DEG    ANIONIC       DISS
                            09105      10302      10401      10702      11102
                           mg/L F   pH UNITS       mg/L       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      267        269        254        104        154
 MEAN                         0.3        7.6        35.        0.0        88.
 MINIMUM                      0.1        7.2         8.        0.0        35.
 DATE OF MINIMUM       1981-03-18 1979-01-02 1980-05-12 1980-07-28 1980-07-23
 10TH PERCENTILE              0.2        7.4        18.        0.0        52.
 MEDIAN                       0.2        7.6        30.        0.0        86.
 90TH PERCENTILE              0.3        7.8        51.        0.1       124.
 MAXIMUM                      0.7        8.1       149.        0.1       188.
 DATE OF MAXIMUM       1980-05-22 1981-07-08 1980-02-06 1980-01-23 1981-09-30
 STANDARD DEVIATION           0.1        0.2        23.        0.0        27.




                               Mg         Si      PO4-P    P ORTHO          P
                             DISS   REACTIVE        SOL       DISS      TOTAL
                            12103      14101      15254      15255      15405
                          mg/L Mg   mg/LSiO2   mg/L PO4     mg/L P     mg/L P


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      219        267        154        116        155
 MEAN                         11.       3.71      0.398      0.386      0.665
 MINIMUM                       8.       0.00      0.210      0.210      0.390
 DATE OF MINIMUM       1980-07-23 1980-05-22 1980-07-23 1980-07-23 1980-07-23
 10TH PERCENTILE               9.       1.10      0.280      0.260      0.465
 MEDIAN                       11.       3.40      0.390      0.380      0.660
 90TH PERCENTILE              13.       7.49      0.540      0.520      0.855
 MAXIMUM                      15.       8.13      0.660      0.620      1.150
 DATE OF MAXIMUM       1980-03-25 1981-02-04 1979-10-24 1980-10-15 1979-01-25
 STANDARD DEVIATION            1.       2.24      0.101      0.096      0.151




                         SULPHATE         Cl    P,P-DDE     ALDRIN   DIELDRIN
                                        DISS                                 
                            16303      17203      18020      18130      18150
                         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      265        269          1          2          2
 MEAN                         71.       159.      0.000      0.000      0.000
 MINIMUM                      32.        67.      0.000      0.000      0.000
 DATE OF MINIMUM       1980-02-06 1980-07-23 1979-01-25 1979-01-25 1979-01-25
 10TH PERCENTILE              55.        95.                                 
 MEDIAN                       71.       158.      0.000      0.000      0.000
 90TH PERCENTILE              88.       222.                                 
 MAXIMUM                     106.       284.      0.000      0.000      0.000
 DATE OF MAXIMUM       1979-09-23 1979-09-23 1981-12-23 1981-12-23 1981-12-23
 STANDARD DEVIATION           13.        46.      0.000      0.000      0.000




                               Ca         Cr         Cr         Mn         Mn
                             DISS      TOTAL       DISS      TOTAL       DISS
                            20105      24002      24052      25005      25105
                          mg/L Ca    mg/L Cr    mg/L Cr    mg/L Mn    mg/L Mn


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      224        189         77        104         53
 MEAN                      76.942      0.018      0.005       0.11       0.13
 MINIMUM                   47.000      0.006      0.001       0.03       0.06
 DATE OF MINIMUM       1981-02-12 1981-07-30 1981-04-15 1979-08-10 1979-04-06
 10TH PERCENTILE           64.000      0.010      0.002       0.08       0.08
 MEDIAN                    76.500      0.017      0.005       0.10       0.12
 90TH PERCENTILE           89.000      0.029      0.008       0.16       0.20
 MAXIMUM                  100.000      0.044      0.019       0.30       0.42
 DATE OF MAXIMUM       1979-09-23 1979-07-29 1981-03-04 1980-12-18 1979-10-03
 STANDARD DEVIATION         9.474      0.007      0.003       0.05       0.06




                               Fe         Ni         Cu         Cu         Zn
                            TOTAL      TOTAL      TOTAL       DISS      TOTAL
                            26004      28002      29006      29105      30005
                          mg/L Fe    mg/L Ni    mg/L Cu    mg/L Cu    MG/L ZN


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      188        105        184         78        187
 MEAN                        1.79      0.009      0.013      0.005      0.103
 MINIMUM                     0.80      0.004      0.006      0.002      0.042
 DATE OF MINIMUM       1980-04-16 1981-07-08 1981-04-15 1979-04-21 1981-10-28
 10TH PERCENTILE             1.00      0.005      0.008      0.003      0.061
 MEDIAN                      1.40      0.009      0.012      0.005      0.090
 90TH PERCENTILE             2.85      0.015      0.018      0.007      0.160
 MAXIMUM                     9.80      0.025      0.042      0.025      0.325
 DATE OF MAXIMUM       1979-01-02 1981-09-30 1979-01-02 1981-06-24 1979-01-02
 STANDARD DEVIATION          1.28      0.004      0.006      0.003      0.046




                               Zn         As         As         Se         Se
                             DISS      TOTAL       DISS      TOTAL       DISS
                            30104      33007      33104      34002      34102
                          mg/L Zn    mg/L As    mg/L As    mg/L Se    mg/L Se


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       77        187         76         52          5
 MEAN                       0.041      0.004      0.002      0.001      0.001
 MINIMUM                    0.014      0.000      0.000      0.000      0.001
 DATE OF MINIMUM       1981-08-05 1981-07-08 1980-07-09 1981-01-07 1979-01-02
 10TH PERCENTILE            0.020      0.002      0.001      0.000           
 MEDIAN                     0.035      0.003      0.002      0.001      0.001
 90TH PERCENTILE            0.070      0.007      0.004      0.001           
 MAXIMUM                    0.105      0.013      0.007      0.001      0.001
 DATE OF MAXIMUM       1979-01-25 1979-03-20 1979-02-06 1980-12-22 1979-03-28
 STANDARD DEVIATION         0.021      0.002      0.001      0.001      0.000




                         FAEC COL         Cd         Cd         Ba         Hg
                                       TOTAL       DISS      TOTAL       DISS
                            36011      48001      48101      80011      80111
                         No/100ml    mg/L Cd    mg/L Cd    ug/L Hg    ug/L Hg


 NO. OF L-FLAGGED VALUES        0          0          0          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       62        188         78        187         78
 MEAN                     1.7E+04      0.001      0.001      0.176      0.069
 MINIMUM                  5.6E+01      0.001      0.000      0.000      0.000
 DATE OF MINIMUM       1980-06-25 1979-02-19 1979-02-06 1979-02-26 1981-01-21
 10TH PERCENTILE          6.0E+02      0.001      0.000      0.059      0.010
 MEDIAN                   4.9E+03      0.001      0.001      0.150      0.050
 90TH PERCENTILE          3.5E+04      0.002      0.001      0.300      0.100
 MAXIMUM                  1.3E+05      0.006      0.002      1.330      0.690
 DATE OF MAXIMUM       1981-07-21 1980-01-04 1979-11-02 1981-10-28 1981-10-28
 STANDARD DEVIATION       3.1E+04      0.001      0.001      0.164      0.090




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


 NO. OF L-FLAGGED VALUES        0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES      168         68       1212
 MEAN                       0.014      0.002     2711.8
 MINIMUM                    0.005      0.001     1113.0
 DATE OF MINIMUM       1981-11-11 1979-02-19 1979-10-17
 10TH PERCENTILE            0.008      0.001     1471.4
 MEDIAN                     0.012      0.001     2367.5
 90TH PERCENTILE            0.020      0.003     4655.8
 MAXIMUM                    0.096      0.006     8811.0
 DATE OF MAXIMUM       1979-01-02 1981-03-04 1980-02-09
 STANDARD DEVIATION         0.009      0.001     1279.0





 STATION - BOVEN MERWEDE (ARM OF RHINE)             STATION NO. 046002
 COUNTRY - NETHERLANDS                              DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 51/49/33  LONG. 004/58/22  ELEVATION(M)   1.0
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

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

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC    PHENOLS   CHLORO A
                             COND                                            
                            02041      02061      06001      06532      06711
                            us/cm      deg C     mg/L C       mg/L       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      154        271        250        116        132
 MEAN                        792.       11.8         8.      0.007     0.0421
 MINIMUM                     470.        1.0         5.      0.003     0.0017
 DATE OF MINIMUM       1980-07-23 1979-01-11 1979-11-07 1980-08-12 1979-01-17
 10TH PERCENTILE             614.        4.0         6.      0.004     0.0027
 MEDIAN                      785.       11.5         8.      0.006     0.0190
 90TH PERCENTILE             990.       19.8        10.      0.011     0.1156
 MAXIMUM                    1270.       22.4        13.      0.020     0.1624
 DATE OF MAXIMUM       1980-12-15 1981-08-13 1981-04-28 1979-01-11 1981-04-28
 STANDARD DEVIATION          154.        6.2         2.      0.003     0.0457




                           N KJEL     NO3NO2        NH3         O2        BOD
                                                              DISS           
                            07004      07105      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          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      266        270        154        116        115
 MEAN                         1.5       3.96       0.51        8.9         3.
 MINIMUM                      0.8       2.78       0.01        6.2         1.
 DATE OF MINIMUM       1980-07-31 1981-08-05 1979-08-15 1980-06-05 1980-07-09
 10TH PERCENTILE              1.0       3.15       0.08        7.1         2.
 MEDIAN                       1.4       3.95       0.38        8.8         3.
 90TH PERCENTILE              2.2       4.70       1.11       10.6         5.
 MAXIMUM                      3.5       5.14       2.60       11.6         6.
 DATE OF MAXIMUM       1979-01-17 1979-01-02 1979-01-31 1981-12-23 1980-06-05
 STANDARD DEVIATION           0.5       0.57       0.46        1.4         1.




                              COD     PERM V          F         pH   SUSP SOL
                                                   DISS               105 DEG
                            08301      08401      09105      10302      10401
                          mg/L O2    mg/L O2     mg/L F   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       57         50        269        271        263
 MEAN                         20.        13.        0.2        7.7        28.
 MINIMUM                      12.         4.        0.0        7.4         5.
 DATE OF MINIMUM       1981-12-30 1981-04-09 1980-05-08 1979-01-02 1980-05-08
 10TH PERCENTILE              15.         5.        0.2        7.5        17.
 MEDIAN                       19.         7.        0.2        7.7        27.
 90TH PERCENTILE              25.        23.        0.3        7.9        42.
 MAXIMUM                      32.        31.        0.7        8.5        59.
 DATE OF MAXIMUM       1980-05-22 1980-05-22 1980-06-11 1980-08-26 1979-09-08
 STANDARD DEVIATION            4.         8.        0.1        0.2        10.




                             TENS         Na         Mg         Si      PO4-P
                          ANIONIC       DISS       DISS   REACTIVE        SOL
                            10702      11102      12103      14101      15254
                             mg/L    mg/L Na    mg/L Mg   mg/LSiO2   mg/L PO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      104         78        128        270        153
 MEAN                         0.0        83.        11.       3.54      0.367
 MINIMUM                      0.0        44.         9.       0.00      0.200
 DATE OF MINIMUM       1981-12-23 1979-02-20 1980-07-01 1979-08-01 1981-12-23
 10TH PERCENTILE              0.0        50.        10.       0.86      0.263
 MEDIAN                       0.0        81.        11.       3.21      0.360
 90TH PERCENTILE              0.1       115.        13.       7.30      0.497
 MAXIMUM                      0.2       147.        15.       8.13      0.640
 DATE OF MAXIMUM       1980-04-09 1979-09-18 1980-03-24 1981-02-04 1979-11-07
 STANDARD DEVIATION           0.0        24.         1.       2.29      0.090




                          P ORTHO          P   SULPHATE         Cl    P,P-DDE
                             DISS      TOTAL                  DISS           
                            15255      15405      16303      17203      18020
                           mg/L P     mg/L P   mg/L SO4    mg/L Cl       ug/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      116        152        265        271          5
 MEAN                       0.360      0.587        70.       149.      0.000
 MINIMUM                    0.200      0.350        44.        67.      0.000
 DATE OF MINIMUM       1981-12-23 1980-02-16 1979-02-26 1980-07-23 1981-02-12
 10TH PERCENTILE            0.260      0.432        54.        98.           
 MEDIAN                     0.350      0.580        69.       148.      0.000
 90TH PERCENTILE            0.480      0.738        84.       203.           
 MAXIMUM                    0.590      0.860       102.       266.      0.000
 DATE OF MAXIMUM       1980-11-20 1979-09-08 1979-10-17 1979-09-26 1981-09-24
 STANDARD DEVIATION         0.086      0.113        12.        42.      0.000




                           ALDRIN   DIELDRIN         Ca         Cr         Cr
                                                   DISS      TOTAL       DISS
                            18130      18150      20105      24002      24052
                             ug/L       ug/L    mg/L Ca    mg/L Cr    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10         10        134         44         25
 MEAN                       0.000      0.000     76.530      0.022      0.005
 MINIMUM                    0.000      0.000     47.000      0.012      0.002
 DATE OF MINIMUM       1981-02-12 1981-02-12 1981-02-12 1981-04-09 1981-04-09
 10TH PERCENTILE            0.000      0.000     64.400      0.013      0.002
 MEDIAN                     0.000      0.000     77.000      0.017      0.004
 90TH PERCENTILE            0.000      0.000     87.600      0.042      0.008
 MAXIMUM                    0.000      0.000    100.000      0.063      0.010
 DATE OF MAXIMUM       1981-09-24 1981-09-24 1979-10-17 1980-06-05 1979-11-30
 STANDARD DEVIATION         0.000      0.000      9.157      0.013      0.003




                               Mn         Mn         Fe         Ni         Cu
                            TOTAL       DISS      TOTAL      TOTAL      TOTAL
                            25005      25105      26004      28002      29006
                          mg/L Mn    mg/L Mn    mg/L Fe    mg/L Ni    mg/L Cu


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       22          9         44         17         42
 MEAN                        0.12       0.12       1.71      0.009      0.011
 MINIMUM                     0.05       0.08       0.85      0.004      0.007
 DATE OF MINIMUM       1980-02-02 1979-05-02 1980-10-09 1980-08-26 1981-01-15
 10TH PERCENTILE             0.07                  0.92      0.005      0.007
 MEDIAN                      0.10       0.11       1.15      0.007      0.010
 90TH PERCENTILE             0.14                  3.15      0.015      0.016
 MAXIMUM                     0.35       0.17       7.40      0.028      0.028
 DATE OF MAXIMUM       1981-08-13 1979-10-17 1981-08-13 1981-08-13 1981-08-13
 STANDARD DEVIATION          0.08       0.03       1.41      0.006      0.005




                               Cu         Zn         Zn         As         As
                             DISS      TOTAL       DISS      TOTAL       DISS
                            29105      30005      30104      33007      33104
                          mg/L Cu    MG/L ZN    mg/L Zn    mg/L As    mg/L As


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       25         44         25         44         25
 MEAN                       0.005      0.107      0.036      0.004      0.002
 MINIMUM                    0.003      0.064      0.008      0.000      0.000
 DATE OF MINIMUM       1980-07-14 1980-08-26 1980-08-26 1981-07-02 1981-07-02
 10TH PERCENTILE            0.003      0.065      0.015      0.002      0.001
 MEDIAN                     0.005      0.090      0.030      0.004      0.002
 90TH PERCENTILE            0.006      0.152      0.059      0.007      0.004
 MAXIMUM                    0.007      0.450      0.065      0.009      0.004
 DATE OF MAXIMUM       1980-06-05 1979-07-28 1980-03-14 1981-08-13 1980-08-26
 STANDARD DEVIATION         0.001      0.065      0.016      0.002      0.001




                               Se         Se   FAEC COL         Cd         Cd
                            TOTAL       DISS                 TOTAL       DISS
                            34002      34102      36011      48001      48101
                          mg/L Se    mg/L Se   No/100ml    mg/L Cd    mg/L Cd


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       26          2         62         44         25
 MEAN                       0.001      0.001      2914.      0.002      0.001
 MINIMUM                    0.000                   20.      0.001      0.000
 DATE OF MINIMUM       1981-01-07            1979-07-04 1981-11-05 1979-02-09
 10TH PERCENTILE            0.000                  158.      0.001      0.000
 MEDIAN                     0.001                 1700.      0.001      0.000
 90TH PERCENTILE            0.001                 6580.      0.002      0.001
 MAXIMUM                    0.001                33000.      0.027      0.015
 DATE OF MAXIMUM       1980-12-10            1980-05-28 1979-10-17 1979-10-17
 STANDARD DEVIATION         0.001                 4836.      0.004      0.003




                               Ba         Hg         Pb         Pb
                            TOTAL       DISS      TOTAL       DISS
                            80011      80111      82001      82101
                          ug/L Hg    ug/L Hg    mg/L Pb    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0
 NO. OF UNFLAGGED VALUES       80         25         36         21
 MEAN                       0.150      0.054      0.012      0.002
 MINIMUM                    0.050      0.010      0.006      0.001
 DATE OF MINIMUM       1981-04-09 1981-02-26 1980-08-26 1979-03-22
 10TH PERCENTILE            0.070      0.010      0.007      0.001
 MEDIAN                     0.110      0.050      0.010      0.001
 90TH PERCENTILE            0.230      0.100      0.018      0.004
 MAXIMUM                    0.650      0.300      0.026      0.006
 DATE OF MAXIMUM       1980-02-02 1980-02-02 1980-06-05 1979-11-30
 STANDARD DEVIATION         0.126      0.058      0.005      0.001





 STATION - LEX (ARM OF RHINE)                       STATION NO. 046003
 COUNTRY - NETHERLANDS                              DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 51/59/54  LONG. 005/04/41  ELEVATION(M)   1.6
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

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

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC    PHENOLS   CHLORO A
                             COND                                            
                            02041      02061      06001      06532      06711
                            us/cm      deg C     mg/L C       mg/L       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      154        271        249        115        131
 MEAN                        801.       11.6         8.      0.007     0.0346
 MINIMUM                     480.        0.5         5.      0.002     0.0021
 DATE OF MINIMUM       1980-07-23 1979-01-24 1979-11-07 1981-08-27 1979-01-17
 10TH PERCENTILE             602.        3.5         6.      0.004     0.0030
 MEDIAN                      800.       11.5         8.      0.006     0.0168
 90TH PERCENTILE             990.       19.5        11.      0.010     0.0961
 MAXIMUM                    1240.       22.2        13.      0.018     0.1476
 DATE OF MAXIMUM       1979-01-31 1981-08-13 1979-12-13 1979-01-11 1981-04-28
 STANDARD DEVIATION          147.        6.1         2.      0.003     0.0378




                           N KJEL     NO3NO2        NH3         O2        BOD
                                                              DISS           
                            07004      07105      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          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      266        271        155        116        112
 MEAN                         1.6       3.97       0.58        9.1         3.
 MINIMUM                      0.7       2.90       0.03        6.1         1.
 DATE OF MINIMUM       1981-08-19 1980-08-06 1981-05-13 1981-06-10 1980-09-10
 10TH PERCENTILE              1.0       3.23       0.13        7.2         2.
 MEDIAN                       1.5       4.01       0.43        9.2         3.
 90TH PERCENTILE              2.4       4.69       1.25       10.9         5.
 MAXIMUM                      3.2       5.25       2.85       13.6         8.
 DATE OF MAXIMUM       1979-01-24 1979-01-02 1979-01-31 1980-01-23 1980-08-26
 STANDARD DEVIATION           0.5       0.53       0.48        1.5         1.




                              COD     PERM V          F         pH   SUSP SOL
                                                   DISS               105 DEG
                            08301      08401      09105      10302      10401
                          mg/L O2    mg/L O2     mg/L F   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       57         50        265        269        261
 MEAN                         20.        13.        0.3        7.7        32.
 MINIMUM                      13.         4.        0.1        7.0         5.
 DATE OF MINIMUM       1981-12-30 1981-03-26 1981-01-07 1979-05-21 1980-11-12
 10TH PERCENTILE              16.         4.        0.2        7.5        11.
 MEDIAN                       20.         8.        0.2        7.7        27.
 90TH PERCENTILE              26.        22.        0.3        8.0        49.
 MAXIMUM                      28.        26.        2.0        8.4       178.
 DATE OF MAXIMUM       1981-12-03 1980-05-22 1979-03-22 1980-08-26 1981-09-10
 STANDARD DEVIATION            4.         8.        0.1        0.2        25.




                             TENS         Na         Mg         Si      PO4-P
                          ANIONIC       DISS       DISS   REACTIVE        SOL
                            10702      11102      12103      14101      15254
                             mg/L    mg/L Na    mg/L Mg   mg/LSiO2   mg/L PO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      102         78        128        271        154
 MEAN                         0.0        84.        11.       3.45      0.356
 MINIMUM                      0.0        44.         9.       0.00      0.210
 DATE OF MINIMUM       1981-01-07 1981-12-17 1979-01-11 1979-07-29 1980-02-16
 10TH PERCENTILE              0.0        52.        10.       0.60      0.270
 MEDIAN                       0.0        84.        11.       3.20      0.350
 90TH PERCENTILE              0.1       112.        13.       7.49      0.455
 MAXIMUM                      0.1       137.        14.       8.77      0.590
 DATE OF MAXIMUM       1980-02-02 1979-10-29 1980-03-24 1981-05-13 1980-11-20
 STANDARD DEVIATION           0.0        23.         1.       2.40      0.076




                          P ORTHO          P   SULPHATE         Cl    P,P-DDE
                             DISS      TOTAL                  DISS           
                            15255      15405      16303      17203      18020
                           mg/L P     mg/L P   mg/L SO4    mg/L Cl       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      116        151        264        271         15
 MEAN                       0.357      0.564        70.       151.      0.000
 MINIMUM                    0.210      0.340        46.        70.      0.000
 DATE OF MINIMUM       1980-02-16 1981-09-16 1980-02-16 1980-07-23 1979-02-09
 10TH PERCENTILE            0.250      0.460        55.        97.      0.000
 MEDIAN                     0.350      0.550        70.       150.      0.000
 90TH PERCENTILE            0.464      0.669        85.       206.      0.000
 MAXIMUM                    0.590      1.080       102.       262.      0.000
 DATE OF MAXIMUM       1980-11-20 1979-01-02 1979-01-31 1979-01-31 1981-09-24
 STANDARD DEVIATION         0.081      0.101        11.        41.      0.000




                           ALDRIN   DIELDRIN         Ca         Cr         Cr
                                                   DISS      TOTAL       DISS
                            18130      18150      20105      24002      24052
                             ug/L       ug/L    mg/L Ca    mg/L Cr    mg/L Cr


 NO. OF L-FLAGGED VALUES        1          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       40         39        134         44         25
 MEAN                       0.002      0.001     76.239      0.016      0.004
 MINIMUM                    0.000      0.000     49.000      0.006      0.001
 DATE OF MINIMUM       1979-02-09 1979-02-09 1981-02-12 1979-10-17 1979-07-28
 10TH PERCENTILE            0.000      0.000     65.000      0.010      0.001
 MEDIAN                     0.000      0.000     77.000      0.016      0.003
 90TH PERCENTILE            0.010      0.000     87.000      0.023      0.009
 MAXIMUM                    0.020      0.010     96.000      0.027      0.009
 DATE OF MAXIMUM       1980-11-03 1980-07-14 1979-10-17 1979-02-09 1980-02-02
 STANDARD DEVIATION         0.005      0.003      8.764      0.005      0.003





                               Mn         Fe         Ni         Cu         Cu
                            TOTAL      TOTAL      TOTAL      TOTAL       DISS
                            25005      26004      28002      29006      29105
                          mg/L Mn    mg/L Fe    mg/L Ni    mg/L Cu    mg/L Cu


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       24         44         17         42         25
 MEAN                        0.12       1.50      0.009      0.011      0.004
 MINIMUM                     0.07       0.50      0.005      0.006      0.003
 DATE OF MINIMUM       1980-10-09 1980-06-05 1980-07-14 1980-10-09 1980-07-14
 10TH PERCENTILE             0.08       0.52      0.005      0.007      0.003
 MEDIAN                      0.12       1.20      0.008      0.010      0.004
 90TH PERCENTILE             0.16       3.10      0.013      0.015      0.005
 MAXIMUM                     0.21       3.70      0.015      0.019      0.007
 DATE OF MAXIMUM       1981-05-21 1979-02-09 1981-11-05 1979-02-09 1979-05-02
 STANDARD DEVIATION          0.04       0.92      0.003      0.003      0.001




                               Zn         Zn         As         As         Se
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            30005      30104      33007      33104      34002
                          MG/L ZN    mg/L Zn    mg/L As    mg/L As    mg/L Se


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       44         25         44         24         10
 MEAN                       0.095      0.035      0.004      0.002      0.000
 MINIMUM                    0.041      0.011      0.000      0.000      0.000
 DATE OF MINIMUM       1980-10-09 1980-08-26 1981-07-02 1980-06-05 1981-01-07
 10TH PERCENTILE            0.062      0.014      0.002      0.000      0.000
 MEDIAN                     0.102      0.035      0.004      0.002      0.000
 90TH PERCENTILE            0.115      0.064      0.007      0.003      0.000
 MAXIMUM                    0.190      0.080      0.012      0.005      0.000
 DATE OF MAXIMUM       1979-11-30 1979-11-30 1979-03-22 1981-05-21 1981-12-09
 STANDARD DEVIATION         0.026      0.020      0.002      0.001      0.000




                         FAEC COL         Cd         Cd         Ba         Hg
                                       TOTAL       DISS      TOTAL       DISS
                            36011      48001      48101      80011      80111
                         No/100ml    mg/L Cd    mg/L Cd    ug/L Hg    ug/L Hg


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       62         44         25         80         25
 MEAN                       2129.      0.001      0.000      0.140      0.057
 MINIMUM                      23.      0.001      0.000      0.040      0.010
 DATE OF MINIMUM       1980-05-28 1980-04-23 1979-02-09 1981-09-02 1980-10-09
 10TH PERCENTILE              55.      0.001      0.000      0.050      0.010
 MEDIAN                      740.      0.001      0.000      0.140      0.050
 90TH PERCENTILE            4640.      0.002      0.001      0.200      0.100
 MAXIMUM                   39000.      0.002      0.001      0.650      0.300
 DATE OF MAXIMUM       1980-07-23 1980-08-26 1980-02-02 1980-02-02 1980-02-02
 STANDARD DEVIATION         5083.      0.000      0.000      0.101      0.058




                               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       36         21
 MEAN                       0.014      0.002
 MINIMUM                    0.003      0.001
 DATE OF MINIMUM       1980-04-23 1979-06-17
 10TH PERCENTILE            0.007      0.001
 MEDIAN                     0.013      0.002
 90TH PERCENTILE            0.024      0.003
 MAXIMUM                    0.029      0.008
 DATE OF MAXIMUM       1979-02-09 1979-11-30
 STANDARD DEVIATION         0.007      0.002





 STATION - IJSSEL (ARM OF RHINE)                    STATION NO. 046004
 COUNTRY - NETHERLANDS                              DEPTH(M)    9999.9
 LOCATION - OCT. 3  LAT. 52/31/12  LONG. 006/01/12  ELEVATION(M)   0.0
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

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

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP        TOC    PHENOLS   CHLORO A
                             COND                                            
                            02041      02061      06001      06532      06711
                            us/cm      deg C     mg/L C       mg/L       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      155        269        250        115        131
 MEAN                        797.       11.7         9.      0.007     0.0431
 MINIMUM                     410.        0.5         6.      0.001     0.0019
 DATE OF MINIMUM       1979-02-20 1979-01-02 1979-11-07 1981-06-18 1979-01-31
 10TH PERCENTILE             615.        3.3         7.      0.004     0.0031
 MEDIAN                      780.       11.3         9.      0.006     0.0227
 90TH PERCENTILE            1015.       19.5        11.      0.010     0.1096
 MAXIMUM                    1250.       21.5        16.      0.028     0.1752
 DATE OF MAXIMUM       1979-10-24 1981-08-05 1979-04-25 1979-01-24 1979-09-12
 STANDARD DEVIATION          160.        6.2         2.      0.003     0.0465




                           N KJEL     NO3NO2        NH3         O2        BOD
                                                              DISS           
                            07004      07105      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          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      268        271        154        115        114
 MEAN                         1.7       4.24       0.57        8.5         4.
 MINIMUM                      0.6       2.91       0.00        5.8         1.
 DATE OF MINIMUM       1981-10-28 1980-07-31 1979-08-15 1980-06-19 1980-02-20
 10TH PERCENTILE              1.1       3.34       0.10        6.4         2.
 MEDIAN                       1.6       4.21       0.40        8.5         3.
 90TH PERCENTILE              2.4       5.17       1.25       10.4         6.
 MAXIMUM                      3.8       5.85       2.93       11.3         9.
 DATE OF MAXIMUM       1979-01-24 1979-03-11 1979-01-31 1981-12-23 1980-09-03
 STANDARD DEVIATION           0.5       0.67       0.51        1.5         2.




                              COD     PERM V          F         pH   SUSP SOL
                                                   DISS               105 DEG
                            08301      08401      09105      10302      10401
                          mg/L O2    mg/L O2     mg/L F   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       57         50        269        269        260
 MEAN                         22.        14.        0.2        7.7        29.
 MINIMUM                      11.         4.        0.1        7.3         2.
 DATE OF MINIMUM       1981-12-30 1981-07-30 1981-04-01 1979-01-02 1980-02-16
 10TH PERCENTILE              16.         5.        0.2        7.5        13.
 MEDIAN                       22.        10.        0.2        7.7        25.
 90TH PERCENTILE              27.        26.        0.3        7.9        47.
 MAXIMUM                      35.        32.        0.8        8.5       141.
 DATE OF MAXIMUM       1981-03-12 1980-02-02 1980-06-05 1979-07-04 1981-12-17
 STANDARD DEVIATION            5.         9.        0.1        0.2        17.




                             TENS         Na         Mg         Si      PO4-P
                          ANIONIC       DISS       DISS   REACTIVE        SOL
                            10702      11102      12103      14101      15254
                             mg/L    mg/L Na    mg/L Mg   mg/LSiO2   mg/L PO4


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      104         78        131        269        154
 MEAN                         0.0        81.        11.       3.84      0.387
 MINIMUM                      0.0        41.         6.       0.00      0.210
 DATE OF MINIMUM       1980-08-20 1980-02-16 1979-02-20 1980-05-28 1980-02-16
 10TH PERCENTILE              0.0        45.         9.       0.90      0.270
 MEDIAN                       0.0        80.        11.       3.50      0.370
 90TH PERCENTILE              0.1       111.        12.       8.13      0.520
 MAXIMUM                      0.1       148.        15.       9.00      0.710
 DATE OF MAXIMUM       1980-01-23 1979-09-18 1980-03-24 1979-03-11 1979-10-24
 STANDARD DEVIATION           0.0        25.         1.       2.53      0.098




                          P ORTHO          P   SULPHATE         Cl    P,P-DDE
                             DISS      TOTAL                  DISS           
                            15255      15405      16303      17203      18020
                           mg/L P     mg/L P   mg/L SO4    mg/L Cl       ug/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      116        153        264        271          5
 MEAN                       0.378      0.615        72.       145.      0.000
 MINIMUM                    0.210      0.310        49.        72.      0.000
 DATE OF MINIMUM       1980-02-16 1980-02-16 1979-02-20 1980-07-23 1981-02-12
 10TH PERCENTILE            0.260      0.420        57.        96.           
 MEDIAN                     0.360      0.630        72.       141.      0.000
 90TH PERCENTILE            0.510      0.770        87.       204.           
 MAXIMUM                    0.700      1.020       103.       273.      0.000
 DATE OF MAXIMUM       1980-10-15 1980-10-15 1979-01-31 1979-10-24 1981-09-24
 STANDARD DEVIATION         0.092      0.134        12.        44.      0.000




                           ALDRIN   DIELDRIN         Ca         Cr         Cr
                                                   DISS      TOTAL       DISS
                            18130      18150      20105      24002      24052
                             ug/L       ug/L    mg/L Ca    mg/L Cr    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       10         10        135         43         25
 MEAN                       0.000      0.000     77.659      0.014      0.004
 MINIMUM                    0.000      0.000     38.000      0.007      0.001
 DATE OF MINIMUM       1981-02-12 1981-02-12 1979-02-20 1981-12-17 1981-04-09
 10TH PERCENTILE            0.000      0.000     65.500      0.009      0.002
 MEDIAN                     0.000      0.000     78.000      0.014      0.003
 90TH PERCENTILE            0.000      0.000     89.500      0.019      0.006
 MAXIMUM                    0.000      0.000    102.000      0.026      0.008
 DATE OF MAXIMUM       1981-09-24 1981-09-24 1979-03-11 1980-02-02 1979-11-30
 STANDARD DEVIATION         0.000      0.000     10.529      0.004      0.002





                               Mn         Fe         Ni         Cu         Cu
                            TOTAL      TOTAL      TOTAL      TOTAL       DISS
                            25005      26004      28002      29006      29105
                          mg/L Mn    mg/L Fe    mg/L Ni    mg/L Cu    mg/L Cu


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       24         44         17         42         25
 MEAN                        0.12       1.28      0.009      0.010      0.005
 MINIMUM                     0.06       0.55      0.005      0.006      0.003
 DATE OF MINIMUM       1980-04-23 1980-06-05 1980-07-14 1979-03-22 1979-03-22
 10TH PERCENTILE             0.06       0.82      0.005      0.007      0.004
 MEDIAN                      0.12       1.10      0.007      0.009      0.004
 90TH PERCENTILE             0.16       1.90      0.013      0.013      0.005
 MAXIMUM                     0.17       2.45      0.021      0.023      0.010
 DATE OF MAXIMUM       1981-02-26 1979-02-09 1981-08-13 1981-08-13 1981-08-13
 STANDARD DEVIATION          0.04       0.48      0.004      0.004      0.001




                               Zn         Zn         As         As         Se
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            30005      30104      33007      33104      34002
                          MG/L ZN    mg/L Zn    mg/L As    mg/L As    mg/L Se


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       44         25         44         25         26
 MEAN                       0.104      0.041      0.004      0.002      0.001
 MINIMUM                    0.050      0.022      0.000      0.000      0.000
 DATE OF MINIMUM       1981-12-17 1980-07-14 1981-07-02 1981-07-02 1981-01-07
 10TH PERCENTILE            0.063      0.023      0.002      0.001      0.000
 MEDIAN                     0.094      0.038      0.003      0.002      0.001
 90TH PERCENTILE            0.157      0.060      0.005      0.004      0.001
 MAXIMUM                    0.270      0.070      0.009      0.005      0.001
 DATE OF MAXIMUM       1979-07-28 1979-11-30 1979-10-17 1981-05-21 1980-12-10
 STANDARD DEVIATION         0.042      0.015      0.002      0.001      0.001




                               Se   FAEC COL         Cd         Cd         Ba
                             DISS                 TOTAL       DISS      TOTAL
                            34102      36011      48001      48101      80011
                          mg/L Se   No/100ml    mg/L Cd    mg/L Cd    ug/L Hg


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES        1         62         44         25         84
 MEAN                       0.001    1.5E+04      0.001      0.000      0.130
 MINIMUM                             0.0E+00      0.000      0.000      0.020
 DATE OF MINIMUM                  1979-04-11 1981-12-17 1979-02-09 1981-04-01
 10TH PERCENTILE                     2.3E+02      0.001      0.000      0.050
 MEDIAN                              3.3E+03      0.001      0.000      0.115
 90TH PERCENTILE                     2.4E+04      0.002      0.001      0.200
 MAXIMUM                             4.9E+05      0.002      0.001      0.390
 DATE OF MAXIMUM                  1980-08-20 1979-11-30 1979-11-30 1981-06-10
 STANDARD DEVIATION                  6.2E+04      0.000      0.001      0.082




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


 NO. OF L-FLAGGED VALUES        0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       25         36         21
 MEAN                       0.048      0.010      0.002
 MINIMUM                    0.010      0.004      0.001
 DATE OF MINIMUM       1981-08-13 1981-12-17 1979-03-22
 10TH PERCENTILE            0.010      0.006      0.001
 MEDIAN                     0.050      0.009      0.001
 90TH PERCENTILE            0.075      0.015      0.003
 MAXIMUM                    0.200      0.019      0.006
 DATE OF MAXIMUM       1980-02-02 1979-02-09 1979-11-30
 STANDARD DEVIATION         0.040      0.004      0.001





 STATION - MAAS RIVER AT BELGIAN FRONTIER           STATION NO. 046005
 COUNTRY - NETHERLANDS                              DEPTH(M)       5.5
 LOCATION - OCT. 3  LAT. 50/46/12  LONG. 005/40/48  ELEVATION(M)  44.0
 REGIONAL CENTRE - EURA                             WATER TYPE   RIVER      

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-01-01 TO 1981-12-31

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             ELEC       TEMP         Li         Li        TOC
                             COND                 TOTAL       DISS           
                            02041      02061      03001      03101      06001
                            us/cm      deg C    mg/L Li    mg/L Li     mg/L C


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      149        260         51          5        234
 MEAN                        456.       13.1        0.0        0.0         8.
 MINIMUM                     260.        2.2        0.0        0.0         3.
 DATE OF MINIMUM       1979-03-15 1979-01-18 1981-01-27 1979-02-21 1980-12-03
 10TH PERCENTILE             320.        5.0        0.0                    5.
 MEDIAN                      430.       12.5        0.0        0.0         7.
 90TH PERCENTILE             620.       21.3        0.0                   11.
 MAXIMUM                     920.       24.5        0.0        0.0        60.
 DATE OF MAXIMUM       1979-12-20 1981-08-06 1981-12-01 1979-03-21 1979-12-12
 STANDARD DEVIATION          116.        6.3        0.0        0.0         4.




                          PHENOLS         CN   CHLORO A     N KJEL     NO3NO2
                                                                             
                            06532      06606      06711      07004      07105
                             mg/L    mg/L Cn       mg/L     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      112          2        130        262        263
 MEAN                       0.008      0.013     0.0183        1.4       2.77
 MINIMUM                    0.000                0.0011        0.5       2.07
 DATE OF MINIMUM       1980-05-08            1980-01-16 1980-12-30 1980-05-21
 10TH PERCENTILE            0.004                0.0021        0.9       2.35
 MEDIAN                     0.007                0.0118        1.3       2.77
 90TH PERCENTILE            0.012                0.0477        2.0       3.19
 MAXIMUM                    0.026                0.1030        4.1       3.58
 DATE OF MAXIMUM       1979-01-18            1981-04-22 1979-12-12 1979-03-07
 STANDARD DEVIATION         0.004                0.0200        0.5       0.31




                              NH3         O2        BOD        COD     PERM V
                                        DISS                                 
                            07555      08101      08201      08301      08401
                           mg/L N    mg/L O2    mg/L O2    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      151        110        112         28          2
 MEAN                        0.56        9.8         3.        19.        18.
 MINIMUM                     0.03        3.7         1.        10.           
 DATE OF MINIMUM       1979-07-11 1980-06-04 1979-02-21 1981-02-10           
 10TH PERCENTILE             0.22        6.3         2.        11.           
 MEDIAN                      0.43       10.5         3.        15.           
 90TH PERCENTILE             1.08       12.7         4.        31.           
 MAXIMUM                     2.07       14.5         9.        52.           
 DATE OF MAXIMUM       1979-10-15 1981-01-08 1980-06-12 1981-06-30           
 STANDARD DEVIATION          0.36        2.4         1.        10.           




                                F         pH   SUSP SOL       TENS         Na
                             DISS               105 DEG    ANIONIC       DISS
                            09105      10302      10401      10702      11102
                           mg/L F   pH UNITS       mg/L       mg/L    mg/L Na


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      249        257        247        101        148
 MEAN                         0.6        7.8        44.        0.0        22.
 MINIMUM                      0.1        7.3         1.        0.0         6.
 DATE OF MINIMUM       1980-07-30 1981-07-27 1979-02-01 1981-01-22 1981-12-01
 10TH PERCENTILE              0.2        7.5         8.        0.0        10.
 MEDIAN                       0.5        7.8        20.        0.0        18.
 90TH PERCENTILE              1.1        8.0        99.        0.1        40.
 MAXIMUM                      2.0        8.2       843.        0.1        80.
 DATE OF MAXIMUM       1979-09-19 1981-03-19 1979-12-12 1980-11-13 1979-10-01
 STANDARD DEVIATION           0.4        0.2        79.        0.0        12.




                               Si      PO4-P    P ORTHO          P   SULPHATE
                         REACTIVE        SOL       DISS      TOTAL           
                            14101      15254      15255      15405      16303
                         mg/LSiO2   mg/L PO4     mg/L P     mg/L P   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      263        151        113        150        250
 MEAN                        4.71      0.394      0.286      0.638        45.
 MINIMUM                     0.60      0.060      0.060      0.200        26.
 DATE OF MINIMUM       1980-05-21 1981-02-10 1980-02-10 1981-12-21 1980-02-07
 10TH PERCENTILE             2.52      0.120      0.120      0.300        32.
 MEDIAN                      3.80      0.270      0.240      0.500        44.
 90TH PERCENTILE             7.49      0.884      0.511      1.200        60.
 MAXIMUM                     8.77      1.760      1.200      2.600       112.
 DATE OF MAXIMUM       1980-11-05 1979-10-01 1980-10-02 1979-12-12 1979-08-08
 STANDARD DEVIATION          2.04      0.353      0.190      0.411        12.




                               Cl    P,P-DDE     ALDRIN   DIELDRIN         Cr
                             DISS                                       TOTAL
                            17203      18020      18130      18150      24002
                          mg/L Cl       ug/L       ug/L       ug/L    mg/L Cr


 NO. OF L-FLAGGED VALUES        0          3          3          2          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES      263         21         60         59         93
 MEAN                         42.      0.000      0.004      0.002      0.015
 MINIMUM                      16.      0.000      0.000      0.000      0.002
 DATE OF MINIMUM       1981-01-22 1979-01-10 1979-01-10 1979-02-08 1979-07-25
 10TH PERCENTILE              23.      0.000      0.000      0.000      0.004
 MEDIAN                       36.      0.000      0.000      0.000      0.008
 90TH PERCENTILE              68.      0.000      0.010      0.009      0.021
 MAXIMUM                     138.      0.000      0.050      0.030      0.191
 DATE OF MAXIMUM       1981-08-06 1981-12-15 1981-06-02 1980-05-08 1979-12-12
 STANDARD DEVIATION           20.      0.000      0.010      0.007      0.027





                               Cr         Mn         Mn         Fe         Fe
                             DISS      TOTAL       DISS      TOTAL       DISS
                            24052      25005      25105      26004      26104
                          mg/L Cr    mg/L Mn    mg/L Mn    mg/L Fe    mg/L Fe


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       37         58         15        129         42
 MEAN                       0.002       0.15       0.22       2.31       0.05
 MINIMUM                    0.001       0.06       0.09       0.40       0.00
 DATE OF MINIMUM       1979-01-10 1980-07-30 1981-01-13 1980-07-30 1979-05-30
 10TH PERCENTILE            0.001       0.08       0.09       0.60       0.05
 MEDIAN                     0.001       0.11       0.16       1.05       0.05
 90TH PERCENTILE            0.003       0.26       0.31       4.07       0.05
 MAXIMUM                    0.013       0.82       0.82      25.20       0.05
 DATE OF MAXIMUM       1981-09-22 1981-12-01 1979-12-12 1979-12-12 1979-05-03
 STANDARD DEVIATION         0.003       0.13       0.18       3.41       0.01




                               Ni         Cu         Cu         Zn         Zn
                            TOTAL      TOTAL       DISS      TOTAL       DISS
                            28002      29006      29105      30005      30104
                          mg/L Ni    mg/L Cu    mg/L Cu    MG/L ZN    mg/L Zn


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       53         90         37         93         37
 MEAN                       0.007      0.011      0.004      0.296      0.095
 MINIMUM                    0.002      0.003      0.001      0.085      0.013
 DATE OF MINIMUM       1981-02-10 1981-12-29 1979-03-07 1981-09-08 1981-06-02
 10TH PERCENTILE            0.003      0.005      0.002      0.106      0.025
 MEDIAN                     0.005      0.009      0.003      0.215      0.069
 90TH PERCENTILE            0.012      0.018      0.005      0.610      0.208
 MAXIMUM                    0.040      0.054      0.009      1.500      0.455
 DATE OF MAXIMUM       1981-12-01 1981-12-01 1980-10-23 1979-12-12 1981-07-27
 STANDARD DEVIATION         0.007      0.008      0.002      0.258      0.085




                               As         As         Se         Se   FAEC COL
                            TOTAL       DISS      TOTAL       DISS           
                            33007      33104      34002      34102      36011
                          mg/L As    mg/L As    mg/L Se    mg/L Se   No/100ml


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       93         35         51          5         64
 MEAN                       0.012      0.008      0.001      0.001     10223.
 MINIMUM                    0.001      0.001      0.000      0.001        74.
 DATE OF MINIMUM       1980-07-30 1979-11-14 1981-01-13 1979-01-10 1980-08-27
 10TH PERCENTILE            0.002      0.002      0.000                  262.
 MEDIAN                     0.010      0.004      0.001      0.001      6200.
 90TH PERCENTILE            0.023      0.018      0.001                22600.
 MAXIMUM                    0.050      0.042      0.010      0.001     79000.
 DATE OF MAXIMUM       1979-10-15 1979-10-15 1981-12-01 1979-03-21 1979-01-10
 STANDARD DEVIATION         0.009      0.009      0.001      0.000     13670.





                               Cd         Cd         Ba         Hg         Pb
                            TOTAL       DISS      TOTAL       DISS      TOTAL
                            48001      48101      80011      80111      82001
                          mg/L Cd    mg/L Cd    ug/L Hg    ug/L Hg    mg/L Pb


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       93         37         92         36         82
 MEAN                       0.003      0.000      0.324      0.045      0.025
 MINIMUM                    0.001      0.000      0.000      0.000      0.003
 DATE OF MINIMUM       1981-09-08 1979-01-10 1980-10-08 1981-09-22 1979-09-19
 10TH PERCENTILE            0.001      0.000      0.082      0.010      0.007
 MEDIAN                     0.002      0.000      0.200      0.050      0.016
 90TH PERCENTILE            0.008      0.001      0.685      0.100      0.040
 MAXIMUM                    0.022      0.006      2.700      0.100      0.295
 DATE OF MAXIMUM       1979-12-12 1981-07-27 1979-12-12 1979-04-04 1979-12-12
 STANDARD DEVIATION         0.003      0.001      0.397      0.028      0.036




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


 NO. OF L-FLAGGED VALUES        0          0
 NO. OF G-FLAGGED VALUES        0          0
 NO. OF UNFLAGGED VALUES       32       1209
 MEAN                       0.001      314.9
 MINIMUM                    0.000        4.1
 DATE OF MINIMUM       1981-01-13 1980-09-24
 10TH PERCENTILE            0.001       71.9
 MEDIAN                     0.001      203.0
 90TH PERCENTILE            0.002      742.1
 MAXIMUM                    0.004     2238.0
 DATE OF MAXIMUM       1979-11-14 1980-07-22
 STANDARD DEVIATION         0.001      286.7





 STATION - IJSSELMEER                               STATION NO. 046006
 COUNTRY - NETHERLANDS                              DEPTH(M)       3.5
 LOCATION - OCT. 3  LAT. 52/43/48  LONG. 005/18/00  ELEVATION(M)   0.0
 REGIONAL CENTRE - EURA                             WATER TYPE   LAKE       

 PERIOD REQUESTED FROM  - 1979-01-01 TO 1981-12-31
 PERIOD OF RECORD FROM  - 1979-03-22 TO 1981-12-03

 STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED


                             TEMP      TRANS         Li         Li        TOC
                                                  TOTAL       DISS           
                            02061      02076      03001      03101      06001
                            deg C          m    mg/L Li    mg/L Li     mg/L C


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       55         49         21          1         49
 MEAN                        10.8        0.5        0.0        0.0        14.
 MINIMUM                      2.0        0.2        0.0                    9.
 DATE OF MINIMUM       1980-12-11 1981-10-08 1981-04-09            1979-04-19
 10TH PERCENTILE              2.0        0.3        0.0                   10.
 MEDIAN                      11.0        0.5        0.0                   14.
 90TH PERCENTILE             19.0        1.0        0.0                   18.
 MAXIMUM                     21.0        1.0        0.0                   25.
 DATE OF MAXIMUM       1981-08-13 1980-02-21 1981-03-19            1981-10-08
 STANDARD DEVIATION           6.0        0.2        0.0                    4.




                          PHENOLS         CN   CHLORO A     N KJEL     NO3NO2
                                                                             
                            06532      06606      06711      07004      07105
                             mg/L    mg/L Cn       mg/L     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       23          1         55         54         55
 MEAN                       0.003      0.003     0.1243        2.0       2.44
 MINIMUM                    0.001                0.0199        0.9       0.21
 DATE OF MINIMUM       1980-04-17            1981-01-22 1981-04-09 1979-09-13
 10TH PERCENTILE            0.001                0.0458        1.2       0.42
 MEDIAN                     0.003                0.1173        2.0       2.74
 90TH PERCENTILE            0.005                0.2000        2.9       4.52
 MAXIMUM                    0.005                0.3220        3.3       4.79
 DATE OF MAXIMUM       1981-04-09            1980-03-20 1981-03-19 1981-03-19
 STANDARD DEVIATION         0.001                0.0724        0.6       1.57




                              NH3         O2        BOD        COD          F
                                        DISS                             DISS
                            07555      08101      08201      08301      09105
                           mg/L N    mg/L O2    mg/L O2    mg/L O2     mg/L F


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       32         23         23         23         51
 MEAN                        0.23       11.9         4.        36.        0.2
 MINIMUM                     0.00        8.0         1.        21.        0.2
 DATE OF MINIMUM       1979-05-17 1981-07-16 1981-01-22 1980-02-21 1979-03-22
 10TH PERCENTILE             0.01        9.8         2.        23.        0.2
 MEDIAN                      0.08       12.3         4.        37.        0.2
 90TH PERCENTILE             0.58       13.4         6.        50.        0.2
 MAXIMUM                     1.51       13.7         9.        56.        0.3
 DATE OF MAXIMUM       1979-03-22 1980-02-21 1981-06-18 1980-11-06 1980-04-17
 STANDARD DEVIATION          0.33        1.5         2.        10.        0.0




                               pH   SUSP SOL       TENS         Si      PO4-P
                                     105 DEG    ANIONIC   REACTIVE        SOL
                            10302      10401      10702      14101      15254
                         pH UNITS       mg/L       mg/L   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       55         53         22         55         32
 MEAN                         8.6        34.        0.0       1.62      0.137
 MINIMUM                      7.9         4.        0.0       0.00      0.030
 DATE OF MINIMUM       1981-03-19 1981-04-09 1981-02-19 1979-05-17 1981-05-06
 10TH PERCENTILE              8.1         6.        0.0       0.00      0.050
 MEDIAN                       8.5        23.        0.0       0.30      0.120
 90TH PERCENTILE              9.3        86.        0.0       6.63      0.238
 MAXIMUM                      9.5       120.        0.1       8.35      0.320
 DATE OF MAXIMUM       1981-08-13 1981-03-19 1981-10-08 1981-01-22 1980-12-11
 STANDARD DEVIATION           0.4        32.        0.0       2.43      0.080




                          P ORTHO          P   SULPHATE         Cl    P,P-DDE
                             DISS      TOTAL                  DISS           
                            15255      15405      16303      17203      18020
                           mg/L P     mg/L P   mg/L SO4    mg/L Cl       ug/L


 NO. OF L-FLAGGED VALUES        0          0          0          0          1
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       23         32          1         55          3
 MEAN                       0.137      0.351        73.       151.      0.000
 MINIMUM                    0.030      0.170                  104.      0.000
 DATE OF MINIMUM       1981-05-06 1980-04-17            1981-04-09 1979-03-22
 10TH PERCENTILE            0.046      0.184                  117.           
 MEDIAN                     0.120      0.300                  147.      0.000
 90TH PERCENTILE            0.230      0.576                  179.           
 MAXIMUM                    0.320      0.770                  225.      0.000
 DATE OF MAXIMUM       1980-12-11 1981-03-19            1979-11-15 1980-09-18
 STANDARD DEVIATION         0.077      0.158                   24.      0.000




                           ALDRIN   DIELDRIN         Fe         Fe         Cu
                                                  TOTAL       DISS      TOTAL
                            18130      18150      26004      26104      29006
                             ug/L       ug/L    mg/L Fe    mg/L Fe    mg/L Cu


 NO. OF L-FLAGGED VALUES        1          1          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       13         11         55         20         51
 MEAN                       0.003      0.002       0.76       0.05      0.005
 MINIMUM                    0.000      0.000       0.05       0.05      0.002
 DATE OF MINIMUM       1979-03-22 1979-03-22 1981-08-13 1979-03-22 1981-12-03
 10TH PERCENTILE            0.000      0.000       0.15       0.05      0.003
 MEDIAN                     0.000      0.000       0.50       0.05      0.005
 90TH PERCENTILE            0.010      0.007       1.75       0.05      0.008
 MAXIMUM                    0.010      0.010       3.00       0.05      0.016
 DATE OF MAXIMUM       1980-11-06 1980-05-22 1981-03-19 1980-12-11 1981-03-19
 STANDARD DEVIATION         0.005      0.004       0.72       0.00      0.003




                               Cu         Zn         Zn         As         As
                             DISS      TOTAL       DISS      TOTAL       DISS
                            29105      30005      30104      33007      33104
                          mg/L Cu    MG/L ZN    mg/L Zn    mg/L As    mg/L As


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       31         54         31         53         30
 MEAN                       0.003      0.038      0.008      0.004      0.003
 MINIMUM                    0.001      0.005      0.001      0.001      0.001
 DATE OF MINIMUM       1981-08-13 1979-06-21 1981-05-06 1979-04-19 1979-04-19
 10TH PERCENTILE            0.002      0.011      0.003      0.002      0.001
 MEDIAN                     0.003      0.026      0.005      0.004      0.002
 90TH PERCENTILE            0.004      0.080      0.018      0.006      0.004
 MAXIMUM                    0.005      0.113      0.020      0.008      0.007
 DATE OF MAXIMUM       1981-06-18 1981-03-19 1980-02-21 1981-03-19 1981-03-19
 STANDARD DEVIATION         0.001      0.029      0.005      0.002      0.002




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


 NO. OF L-FLAGGED VALUES        0          0          0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0          0          0
 NO. OF UNFLAGGED VALUES       21          1         55         32         54
 MEAN                       0.000      0.001      0.000      0.000      0.096
 MINIMUM                    0.000                 0.000      0.000      0.020
 DATE OF MINIMUM       1981-01-22            1979-04-19 1979-03-22 1981-04-09
 10TH PERCENTILE            0.000                 0.000      0.000      0.030
 MEDIAN                     0.000                 0.000      0.000      0.050
 90TH PERCENTILE            0.001                 0.001      0.000      0.200
 MAXIMUM                    0.001                 0.002      0.000      0.300
 DATE OF MAXIMUM       1980-12-11            1981-03-19 1981-12-03 1980-02-21
 STANDARD DEVIATION         0.001                 0.000      0.000      0.078




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


 NO. OF L-FLAGGED VALUES        0          0          0
 NO. OF G-FLAGGED VALUES        0          0          0
 NO. OF UNFLAGGED VALUES       31         47         28
 MEAN                       0.059      0.005      0.001
 MINIMUM                    0.000      0.001      0.000
 DATE OF MINIMUM       1981-01-22 1979-06-21 1981-01-22
 10TH PERCENTILE            0.010      0.001      0.001
 MEDIAN                     0.050      0.004      0.001
 90TH PERCENTILE            0.100      0.011      0.002
 MAXIMUM                    0.300      0.016      0.003
 DATE OF MAXIMUM       1980-02-21 1981-03-19 1981-02-19
 STANDARD DEVIATION         0.063      0.004      0.001



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Last updated: 2001-07-30