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STATISTICS FOR THE UNITED KINGDOM
GEMS/WATER - STATISTICAL SUMMARY BY STATION 2002-01-24 PAGE 897
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 - 1991-01-01 TO 1993-12-31
PERIOD OF RECORD FROM - 1991-01-08 TO 1993-12-30
STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED
ELEC TEMP NO3NO2 NH3 PERCENT
COND DO SAT
02041 02062 07105 07556 08001
us/cm deg C mg/L N mg/L N PERCENT
NO. OF L-FLAGGED VALUES 0 0 0 8 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 37 89 37 81 55
MEAN 671. 12.5 7.87 0.36 89.
MINIMUM 391. 3.0 1.77 0.05 53.
DATE OF MINIMUM 1993-10-04 1992-01-21 1992-08-04 1991-01-08 1992-05-31
10TH PERCENTILE 605. 5.0 5.96 0.05 67.
MEDIAN 657. 12.4 8.09 0.28 92.
90TH PERCENTILE 702. 19.5 9.64 0.78 102.
MAXIMUM 1343. 22.0 12.22 1.20 123.
DATE OF MAXIMUM 1991-02-12 1991-08-15 1991-03-13 1991-02-12 1992-08-04
STANDARD DEVIATION 137. 5.5 1.93 0.28 13.
O2 BOD ALK pH SUSP SOL
DISS TOTAL 105 DEG
08102 08201 10102 10301 10401
mg/L O2 mg/L O2 mg/L pH UNITS mg/L
NO. OF L-FLAGGED VALUES 0 21 0 0 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 61 64 37 89 55
MEAN 9.7 3. 190.89 7.9 12.
MINIMUM 4.5 1. 147.00 7.1 2.
DATE OF MINIMUM 1992-05-31 1991-12-10 1991-01-08 1991-06-27 1991-09-10
10TH PERCENTILE 6.8 2. 164.40 7.5 4.
MEDIAN 10.0 2. 181.00 7.9 9.
90TH PERCENTILE 12.0 4. 221.00 8.3 21.
MAXIMUM 12.7 8. 257.00 8.7 48.
DATE OF MAXIMUM 1993-04-19 1991-04-22 1992-08-04 1993-05-17 1993-10-04
STANDARD DEVIATION 1.9 1. 24.15 0.3 9.
Na Mg Si SULPHATE Cl
DISS DISS REACTIVE DISS
11105 12102 14101 16304 17203
mg/L Na mg/L Mg mg/LSiO2 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 35 34 49 36 87
MEAN 40. 6. 9.79 75. 53.
MINIMUM 20. 3. 0.10 64. 18.
DATE OF MINIMUM 1993-10-04 1991-03-13 1993-05-17 1993-02-15 1992-08-04
10TH PERCENTILE 25. 5. 2.66 66. 39.
MEDIAN 41. 6. 11.10 75. 55.
90TH PERCENTILE 53. 6. 13.61 83. 66.
MAXIMUM 58. 6. 15.10 105. 76.
DATE OF MAXIMUM 1991-09-23 1991-05-14 1993-11-01 1993-10-04 1991-02-12
STANDARD DEVIATION 10. 1. 3.88 8. 11.
DDT LINDANE ALDRIN DIELDRIN K
TOTAL DISS
18002 18070 18130 18150 19102
ug/L ug/L ug/L ug/L mg/L K
NO. OF L-FLAGGED VALUES 31 1 34 34 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 1 34 1 1 35
MEAN 0.006 0.019 0.005 0.005 7.7
MINIMUM 0.001 0.001 0.001 0.001 5.0
DATE OF MINIMUM 1993-10-04 1993-12-02 1993-10-04 1993-10-04 1993-04-15
10TH PERCENTILE 0.002 0.009 0.003 0.003 5.2
MEDIAN 0.005 0.018 0.005 0.005 7.0
90TH PERCENTILE 0.010 0.031 0.005 0.005 9.9
MAXIMUM 0.010 0.048 0.010 0.005 17.6
DATE OF MAXIMUM 1992-04-21 1993-01-20 1991-08-19 1993-09-06 1993-07-12
STANDARD DEVIATION 0.003 0.010 0.001 0.001 2.4
Ca Cr Cr Fe Fe
DISS TOTAL DISS TOTAL DISS
20103 24002 24052 26004 26104
mg/L Ca mg/L Cr mg/L Cr mg/L Fe mg/L Fe
NO. OF L-FLAGGED VALUES 0 36 30 3 2
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 35 0 0 31 25
MEAN 103.000 0.010 0.010 0.33 0.09
MINIMUM 55.000 0.005 0.010 0.01 0.02
DATE OF MINIMUM 1993-10-04 1991-01-08 1991-04-12 1991-02-12 1992-08-04
10TH PERCENTILE 87.500 0.008 0.010 0.03 0.02
MEDIAN 104.000 0.010 0.010 0.21 0.03
90TH PERCENTILE 118.000 0.010 0.010 0.58 0.16
MAXIMUM 121.000 0.010 0.010 1.66 1.06
DATE OF MAXIMUM 1992-11-24 1993-12-02 1993-12-02 1992-11-16 1992-11-16
STANDARD DEVIATION 12.677 0.001 0.000 0.36 0.20
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 33 29 8 21 2
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 2 4 30 10 35
MEAN 0.014 0.016 0.007 0.005 0.023
MINIMUM 0.005 0.006 0.005 0.001 0.008
DATE OF MINIMUM 1991-03-13 1991-02-12 1991-01-08 1991-02-12 1992-08-04
10TH PERCENTILE 0.010 0.010 0.005 0.005 0.012
MEDIAN 0.010 0.020 0.007 0.005 0.019
90TH PERCENTILE 0.020 0.020 0.009 0.006 0.034
MAXIMUM 0.020 0.051 0.014 0.007 0.082
DATE OF MAXIMUM 1992-05-12 1993-04-15 1991-03-13 1992-10-19 1991-06-18
STANDARD DEVIATION 0.005 0.008 0.002 0.001 0.015
Zn As As Cd Cd
DISS TOTAL DISS TOTAL DISS
30104 33007 33104 48001 48101
mg/L Zn mg/L As mg/L As mg/L Cd mg/L Cd
NO. OF L-FLAGGED VALUES 10 35 31 31 10
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 18 0 0 2 0
MEAN 0.011 0.005 0.005 0.001 0.001
MINIMUM 0.008 0.005 0.005 0.000 0.000
DATE OF MINIMUM 1992-11-24 1991-01-08 1991-02-12 1991-01-08 1991-02-12
10TH PERCENTILE 0.008 0.005 0.005 0.000 0.000
MEDIAN 0.010 0.005 0.005 0.001 0.001
90TH PERCENTILE 0.016 0.005 0.005 0.001 0.001
MAXIMUM 0.023 0.005 0.005 0.001 0.001
DATE OF MAXIMUM 1992-11-16 1993-12-02 1993-12-02 1993-12-02 1992-05-12
STANDARD DEVIATION 0.004 0.000 0.000 0.000 0.000
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 37 3 22 27
NO. OF G-FLAGGED VALUES 0 0 0 0
NO. OF UNFLAGGED VALUES 1 0 9 0
MEAN 0.105 0.100 0.005 0.005
MINIMUM 0.100 0.002 0.005
DATE OF MINIMUM 1991-01-08 1991-01-08 1991-02-12
10TH PERCENTILE 0.100 0.005 0.005
MEDIAN 0.100 0.005 0.005
90TH PERCENTILE 0.100 0.006 0.005
MAXIMUM 0.300 0.016 0.005
DATE OF MAXIMUM 1991-02-12 1991-12-16 1993-12-02
STANDARD DEVIATION 0.032 0.002 0.000
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 - 1991-01-01 TO 1993-12-31
PERIOD OF RECORD FROM - 1991-01-03 TO 1993-12-29
STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED
TEMP NO3NO2 NH3 PERCENT O2
DO SAT DISS
02061 07105 07556 08001 08102
deg C mg/L N mg/L N PERCENT mg/L O2
NO. OF L-FLAGGED VALUES 0 0 5 0 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 150 117 154 150 147
MEAN 11.7 7.95 0.29 88. 9.6
MINIMUM 1.0 4.80 0.02 62. 6.0
DATE OF MINIMUM 1991-02-12 1992-08-17 1991-01-09 1992-07-10 1992-07-10
10TH PERCENTILE 6.0 5.77 0.10 76. 7.6
MEDIAN 11.0 7.40 0.25 87. 9.6
90TH PERCENTILE 18.0 10.33 0.52 98. 11.5
MAXIMUM 21.0 14.80 0.84 160. 16.7
DATE OF MAXIMUM 1992-06-25 1991-01-09 1991-01-21 1992-05-20 1993-05-06
STANDARD DEVIATION 4.7 2.09 0.17 12. 1.7
BOD pH SUSP SOL Na Mg
105 DEG DISS DISS
08201 10301 10401 11102 12103
mg/L O2 pH UNITS mg/L mg/L Na mg/L Mg
NO. OF L-FLAGGED VALUES 0 0 1 0 1
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 158 159 158 35 34
MEAN 3. 8.1 22. 30. 7.
MINIMUM 1. 7.7 2. 8. 0.
DATE OF MINIMUM 1991-01-30 1991-06-27 1991-12-11 1991-01-15 1992-02-10
10TH PERCENTILE 2. 7.9 6. 17. 5.
MEDIAN 3. 8.1 11. 30. 7.
90TH PERCENTILE 5. 8.3 46. 43. 7.
MAXIMUM 12. 8.9 211. 50. 8.
DATE OF MAXIMUM 1991-01-21 1992-05-20 1993-01-11 1992-06-30 1992-06-19
STANDARD DEVIATION 2. 0.2 32. 10. 1.
Si SULPHATE Cl DDT LINDANE
REACTIVE DISS TOTAL
14101 16304 17203 18002 18070
mg/LSiO2 mg/L SO4 mg/L Cl ug/L ug/L
NO. OF L-FLAGGED VALUES 1 0 0 25 2
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 34 34 159 15 39
MEAN 8.07 57. 46. 0.002 0.012
MINIMUM 1.00 12. 28. 0.000 0.001
DATE OF MINIMUM 1992-05-20 1992-02-10 1993-01-11 1993-06-18 1992-08-28
10TH PERCENTILE 1.45 47. 36. 0.000 0.003
MEDIAN 9.20 58. 46. 0.001 0.009
90TH PERCENTILE 10.50 66. 59. 0.005 0.018
MAXIMUM 12.10 73. 72. 0.005 0.049
DATE OF MAXIMUM 1992-07-29 1992-06-19 1991-02-18 1991-10-02 1993-09-10
STANDARD DEVIATION 3.05 11. 9. 0.002 0.010
ALDRIN DIELDRIN K Ca Cr
DISS DISS TOTAL
18130 18150 19102 20101 24002
ug/L ug/L mg/L K mg/L Ca mg/L Cr
NO. OF L-FLAGGED VALUES 28 11 0 0 7
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 14 31 35 35 33
MEAN 0.002 0.002 6.7 106.629 0.003
MINIMUM 0.001 0.001 0.2 5.000 0.001
DATE OF MINIMUM 1992-01-22 1992-01-22 1993-03-26 1992-02-10 1992-05-08
10TH PERCENTILE 0.001 0.001 4.6 88.000 0.001
MEDIAN 0.001 0.001 6.6 113.000 0.002
90TH PERCENTILE 0.005 0.005 8.9 125.000 0.004
MAXIMUM 0.005 0.005 10.0 126.000 0.030
DATE OF MAXIMUM 1991-10-02 1991-10-02 1993-06-18 1992-03-10 1991-02-12
STANDARD DEVIATION 0.002 0.002 1.9 25.396 0.004
Cr Fe Fe Ni Ni
DISS TOTAL DISS TOTAL DISS
24052 26004 26104 28001 28101
mg/L Cr mg/L Fe mg/L Fe mg/L Ni mg/L Ni
NO. OF L-FLAGGED VALUES 8 0 14 5 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 28 35 20 34 29
MEAN 0.001 0.37 0.09 0.004 0.003
MINIMUM 0.001 0.10 0.05 0.001 0.002
DATE OF MINIMUM 1992-01-22 1993-07-16 1992-01-22 1992-01-22 1992-02-10
10TH PERCENTILE 0.001 0.12 0.05 0.002 0.002
MEDIAN 0.001 0.23 0.05 0.003 0.003
90TH PERCENTILE 0.003 0.80 0.12 0.005 0.004
MAXIMUM 0.003 2.60 0.72 0.030 0.005
DATE OF MAXIMUM 1991-03-11 1993-01-11 1993-03-10 1991-03-11 1992-09-23
STANDARD DEVIATION 0.001 0.45 0.12 0.006 0.001
Cu Cu Zn Zn As
TOTAL DISS TOTAL DISS TOTAL
29006 29106 30004 30104 33007
mg/L Cu mg/L Cu mg/L Zn mg/L Zn mg/L As
NO. OF L-FLAGGED VALUES 2 1 2 0 2
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 36 34 36 29 1
MEAN 0.006 0.004 0.018 0.012 0.002
MINIMUM 0.002 0.002 0.009 0.007
DATE OF MINIMUM 1991-03-11 1991-02-12 1992-01-22 1993-01-25
10TH PERCENTILE 0.003 0.002 0.011 0.008
MEDIAN 0.005 0.004 0.015 0.011
90TH PERCENTILE 0.008 0.005 0.029 0.015
MAXIMUM 0.020 0.006 0.062 0.024
DATE OF MAXIMUM 1991-02-12 1992-07-10 1992-08-28 1993-03-10
STANDARD DEVIATION 0.003 0.001 0.010 0.004
As Cd Cd Ba Hg
DISS TOTAL DISS TOTAL DISS
33104 48001 48101 80011 80111
mg/L As mg/L Cd mg/L Cd ug/L Hg ug/L Hg
NO. OF L-FLAGGED VALUES 3 21 21 20 19
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 0 19 15 18 14
MEAN 0.002 0.000 0.000 0.038 0.020
MINIMUM 0.000 0.000 0.020 0.020
DATE OF MINIMUM 1991-02-12 1992-01-22 1992-01-22 1992-01-22
10TH PERCENTILE 0.000 0.000 0.020 0.020
MEDIAN 0.000 0.000 0.020 0.020
90TH PERCENTILE 0.000 0.000 0.032 0.020
MAXIMUM 0.001 0.001 0.500 0.020
DATE OF MAXIMUM 1991-01-30 1991-03-11 1991-06-26 1993-09-10
STANDARD DEVIATION 0.000 0.000 0.079 0.000
Pb Pb
TOTAL DISS
82001 82101
mg/L Pb mg/L Pb
NO. OF L-FLAGGED VALUES 5 13
NO. OF G-FLAGGED VALUES 0 0
NO. OF UNFLAGGED VALUES 33 23
MEAN 0.004 0.001
MINIMUM 0.001 0.001
DATE OF MINIMUM 1992-01-22 1992-01-22
10TH PERCENTILE 0.001 0.001
MEDIAN 0.003 0.001
90TH PERCENTILE 0.008 0.002
MAXIMUM 0.015 0.003
DATE OF MAXIMUM 1992-08-28 1992-07-10
STANDARD DEVIATION 0.003 0.000
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 - 1991-01-01 TO 1993-12-31
PERIOD OF RECORD FROM - 1991-01-11 TO 1993-12-07
STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED
ELEC TEMP NO3NO2 NH3 PERCENT
COND DO SAT
02041 02062 07105 07556 08001
us/cm deg C mg/L N mg/L N PERCENT
NO. OF L-FLAGGED VALUES 0 0 0 9 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 81 81 82 73 81
MEAN 168. 10.3 2.59 0.06 98.
MINIMUM 111. 1.0 1.50 0.01 75.
DATE OF MINIMUM 1993-12-07 1991-02-11 1993-12-07 1991-04-09 1991-02-11
10TH PERCENTILE 133. 5.7 1.75 0.02 92.
MEDIAN 164. 9.9 2.60 0.04 97.
90TH PERCENTILE 210. 15.9 3.20 0.11 108.
MAXIMUM 238. 19.4 7.12 0.43 119.
DATE OF MAXIMUM 1991-06-21 1992-05-27 1991-02-11 1993-03-22 1993-03-22
STANDARD DEVIATION 29. 4.1 0.72 0.06 7.
O2 BOD ALK pH SUSP SOL
DISS TOTAL 105 DEG
08102 08201 10102 10301 10401
mg/L O2 mg/L O2 mg/L pH UNITS mg/L
NO. OF L-FLAGGED VALUES 0 7 0 0 1
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 81 75 81 82 81
MEAN 11.1 2. 39.38 7.7 16.
MINIMUM 8.6 1. 23.00 6.9 1.
DATE OF MINIMUM 1991-08-14 1991-08-14 1991-01-11 1992-10-24 1991-09-22
10TH PERCENTILE 9.4 1. 29.00 7.4 2.
MEDIAN 11.2 2. 38.00 7.7 5.
90TH PERCENTILE 12.6 3. 51.80 7.9 32.
MAXIMUM 14.6 6. 69.00 9.0 266.
DATE OF MAXIMUM 1991-12-12 1992-03-12 1993-10-01 1993-03-22 1992-03-12
STANDARD DEVIATION 1.3 1. 9.25 0.3 38.
Na Mg Si SULPHATE Cl
DISS DISS REACTIVE DISS
11102 12102 14101 16306 17203
mg/L Na mg/L Mg mg/LSiO2 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 81 81 80 81 82
MEAN 12. 4. 4.11 14. 18.
MINIMUM 7. 3. 1.00 6. 13.
DATE OF MINIMUM 1993-10-13 1992-09-02 1993-03-26 1993-01-12 1993-11-15
10TH PERCENTILE 8. 3. 2.80 8. 14.
MEDIAN 11. 4. 4.22 12. 17.
90TH PERCENTILE 17. 5. 5.10 21. 23.
MAXIMUM 27. 5. 5.60 40. 27.
DATE OF MAXIMUM 1991-09-22 1993-03-26 1991-12-12 1991-09-22 1991-09-22
STANDARD DEVIATION 4. 1. 0.92 6. 3.
DDT LINDANE ALDRIN DIELDRIN K
TOTAL DISS
18002 18070 18130 18150 19102
ug/L ug/L ug/L ug/L mg/L K
NO. OF L-FLAGGED VALUES 4 0 4 4 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 0 4 0 0 81
MEAN 0.005 0.006 0.001 0.003 2.0
MINIMUM 0.005 0.003 0.001 0.003 1.0
DATE OF MINIMUM 1991-01-17 1991-01-17 1991-01-17 1991-01-17 1991-03-04
10TH PERCENTILE 1.4
MEDIAN 0.005 0.004 0.001 0.003 1.8
90TH PERCENTILE 2.7
MAXIMUM 0.005 0.012 0.001 0.003 3.6
DATE OF MAXIMUM 1991-10-09 1991-10-09 1991-10-09 1991-10-09 1992-08-25
STANDARD DEVIATION 0.000 0.004 0.000 0.000 0.5
Ca Cr Cr Fe Fe
DISS TOTAL DISS TOTAL DISS
20103 24002 24052 26004 26104
mg/L Ca mg/L Cr mg/L Cr mg/L Fe mg/L Fe
NO. OF L-FLAGGED VALUES 0 46 4 1 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 81 36 12 80 36
MEAN 16.635 0.002 0.001 0.48 0.53
MINIMUM 12.000 0.001 0.001 0.02 0.05
DATE OF MINIMUM 1993-01-12 1991-11-14 1992-02-10 1991-03-04 1993-03-26
10TH PERCENTILE 13.910 0.001 0.001 0.10 0.09
MEDIAN 16.000 0.001 0.001 0.22 0.20
90TH PERCENTILE 20.290 0.005 0.001 0.70 0.79
MAXIMUM 23.000 0.007 0.001 8.12 8.12
DATE OF MAXIMUM 1993-03-26 1992-03-12 1993-12-07 1992-03-12 1992-03-12
STANDARD DEVIATION 2.666 0.002 0.000 1.04 1.34
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 32 1 25 3 13
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 50 14 57 19 69
MEAN 0.003 0.002 0.003 0.002 0.007
MINIMUM 0.001 0.001 0.001 0.001 0.002
DATE OF MINIMUM 1991-11-28 1992-02-10 1991-11-14 1992-01-13 1992-11-16
10TH PERCENTILE 0.001 0.001 0.001 0.001 0.003
MEDIAN 0.002 0.001 0.002 0.002 0.005
90TH PERCENTILE 0.005 0.004 0.005 0.003 0.014
MAXIMUM 0.012 0.010 0.011 0.003 0.052
DATE OF MAXIMUM 1992-03-12 1993-03-26 1992-03-12 1993-08-12 1992-03-12
STANDARD DEVIATION 0.002 0.002 0.002 0.001 0.008
Zn As As Cd Cd
DISS TOTAL DISS TOTAL DISS
30104 33007 33104 48001 48101
mg/L Zn mg/L As mg/L As mg/L Cd mg/L Cd
NO. OF L-FLAGGED VALUES 0 0 0 56 1
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 13 60 8 26 12
MEAN 0.005 0.001 0.001 0.000 0.000
MINIMUM 0.002 0.000 0.001 0.000 0.000
DATE OF MINIMUM 1993-07-14 1991-11-19 1992-02-10 1991-10-09 1992-12-18
10TH PERCENTILE 0.002 0.000 0.000 0.000
MEDIAN 0.005 0.001 0.001 0.000 0.000
90TH PERCENTILE 0.009 0.001 0.001 0.000
MAXIMUM 0.012 0.006 0.001 0.001 0.000
DATE OF MAXIMUM 1993-06-04 1992-03-12 1993-12-07 1991-10-01 1993-12-07
STANDARD DEVIATION 0.003 0.001 0.000 0.000 0.000
Ba Hg Pb Pb
TOTAL DISS TOTAL DISS
80016 80111 82001 82101
ug/L Hg ug/L Hg mg/L Pb mg/L Pb
NO. OF L-FLAGGED VALUES 11 6 43 4
NO. OF G-FLAGGED VALUES 0 0 0 0
NO. OF UNFLAGGED VALUES 8 2 39 12
MEAN 0.033 0.020 0.003 0.001
MINIMUM 0.020 0.020 0.001 0.001
DATE OF MINIMUM 1991-10-09 1992-02-10 1991-11-14 1992-02-10
10TH PERCENTILE 0.020 0.001 0.001
MEDIAN 0.020 0.020 0.001 0.001
90TH PERCENTILE 0.100 0.005 0.001
MAXIMUM 0.100 0.020 0.012 0.001
DATE OF MAXIMUM 1991-08-07 1993-03-26 1992-03-12 1993-12-07
STANDARD DEVIATION 0.030 0.000 0.002 0.000
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 - 1991-01-01 TO 1993-12-31
PERIOD OF RECORD FROM - 1991-01-16 TO 1993-12-21
STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED
ELEC TEMP NO3NO2 NH3 O2
COND DISS
02041 02061 07105 07556 08102
us/cm deg C mg/L N mg/L N mg/L O2
NO. OF L-FLAGGED VALUES 0 0 0 8 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 130 128 130 125 127
MEAN 885. 11.1 9.04 0.25 10.8
MINIMUM 470. 1.0 5.56 0.04 7.2
DATE OF MINIMUM 1992-12-03 1991-01-16 1993-12-14 1991-04-17 1993-06-03
10TH PERCENTILE 630. 4.8 6.80 0.04 8.7
MEDIAN 910. 10.0 9.07 0.21 11.0
90TH PERCENTILE 1080. 18.0 11.00 0.50 12.3
MAXIMUM 1250. 22.0 13.12 1.55 13.4
DATE OF MAXIMUM 1991-02-13 1992-06-25 1992-01-10 1991-02-13 1991-04-16
STANDARD DEVIATION 170. 5.3 1.60 0.21 1.4
BOD ALK pH SUSP SOL Na
TOTAL 105 DEG DISS
08201 10102 10301 10401 11102
mg/L O2 mg/L pH UNITS 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 133 130 130 133 33
MEAN 3. 157.90 8.0 23. 80.
MINIMUM 2. 63.00 7.5 5. 25.
DATE OF MINIMUM 1991-01-17 1993-11-15 1992-01-10 1991-02-13 1993-12-14
10TH PERCENTILE 2. 127.00 7.7 6. 25.
MEDIAN 3. 161.50 7.9 11. 84.
90TH PERCENTILE 4. 180.00 8.2 48. 129.
MAXIMUM 8. 199.00 8.6 267. 162.
DATE OF MAXIMUM 1992-01-10 1993-05-18 1992-06-25 1993-01-14 1991-02-13
STANDARD DEVIATION 1. 21.80 0.2 35. 38.
Mg Si SULPHATE Cl DDT
DISS REACTIVE DISS TOTAL
12102 14101 16302 17203 18002
mg/L Mg mg/LSiO2 mg/L SO4 mg/L Cl ug/L
NO. OF L-FLAGGED VALUES 0 0 0 0 62
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 29 33 33 130 28
MEAN 24. 7.92 170. 107. 0.005
MINIMUM 11. 2.20 65. 42. 0.005
DATE OF MINIMUM 1993-12-14 1991-04-17 1993-12-14 1992-12-03 1991-01-16
10TH PERCENTILE 12. 3.13 94. 61. 0.005
MEDIAN 24. 8.48 180. 108. 0.005
90TH PERCENTILE 30. 10.64 214. 145. 0.005
MAXIMUM 33. 12.00 300. 210. 0.025
DATE OF MAXIMUM 1992-02-17 1991-12-16 1991-06-15 1991-02-13 1992-01-10
STANDARD DEVIATION 6. 2.57 47. 33. 0.002
LINDANE ALDRIN DIELDRIN K Ca
DISS DISS
18070 18130 18150 19102 20103
ug/L ug/L ug/L mg/L K mg/L Ca
NO. OF L-FLAGGED VALUES 31 65 65 0 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 59 28 28 33 30
MEAN 0.011 0.006 0.005 11.0 93.310
MINIMUM 0.005 0.005 0.005 6.5 59.800
DATE OF MINIMUM 1991-01-17 1991-01-16 1991-01-16 1993-12-14 1993-12-14
10TH PERCENTILE 0.005 0.005 0.005 7.2 66.000
MEDIAN 0.005 0.005 0.005 10.4 97.000
90TH PERCENTILE 0.023 0.005 0.005 14.0 108.000
MAXIMUM 0.035 0.039 0.025 24.6 113.000
DATE OF MAXIMUM 1991-07-09 1991-12-16 1992-01-10 1991-05-21 1991-05-21
STANDARD DEVIATION 0.008 0.004 0.002 3.5 14.917
Cr Cr Fe Ni Ni
TOTAL DISS DISS TOTAL DISS
24002 24052 26104 28001 28101
mg/L Cr mg/L Cr mg/L Fe mg/L Ni mg/L Ni
NO. OF L-FLAGGED VALUES 0 4 0 0 1
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 96 70 12 95 72
MEAN 0.048 0.002 0.15 0.026 0.023
MINIMUM 0.001 0.001 0.02 0.005 0.005
DATE OF MINIMUM 1993-06-03 1991-10-02 1993-09-03 1993-12-14 1991-03-11
10TH PERCENTILE 0.002 0.001 0.02 0.013 0.011
MEDIAN 0.004 0.002 0.06 0.024 0.023
90TH PERCENTILE 0.007 0.003 0.40 0.037 0.034
MAXIMUM 4.210 0.006 0.51 0.069 0.054
DATE OF MAXIMUM 1992-03-22 1992-01-21 1993-08-23 1991-06-25 1991-09-24
STANDARD DEVIATION 0.429 0.001 0.17 0.011 0.010
Cu Cu Zn Zn As
TOTAL DISS TOTAL DISS TOTAL
29006 29106 30004 30104 33007
mg/L Cu mg/L Cu mg/L Zn mg/L Zn mg/L As
NO. OF L-FLAGGED VALUES 0 0 0 0 8
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 95 77 103 75 25
MEAN 0.013 0.008 0.056 0.035 0.004
MINIMUM 0.008 0.005 0.023 0.017 0.001
DATE OF MINIMUM 1992-04-06 1993-12-21 1992-09-03 1992-09-03 1993-03-04
10TH PERCENTILE 0.009 0.006 0.031 0.021 0.002
MEDIAN 0.012 0.008 0.048 0.030 0.003
90TH PERCENTILE 0.018 0.011 0.092 0.054 0.005
MAXIMUM 0.034 0.014 0.164 0.087 0.006
DATE OF MAXIMUM 1992-01-10 1991-07-16 1993-12-09 1991-02-13 1991-12-05
STANDARD DEVIATION 0.004 0.002 0.028 0.015 0.001
Cd Cd Ba Pb Pb
TOTAL DISS TOTAL TOTAL DISS
48001 48101 80016 82001 82101
mg/L Cd mg/L Cd ug/L Hg mg/L Pb mg/L Pb
NO. OF L-FLAGGED VALUES 17 16 34 6 15
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 94 60 16 90 61
MEAN 0.000 0.000 0.101 0.011 0.002
MINIMUM 0.000 0.000 0.100 0.003 0.000
DATE OF MINIMUM 1991-09-23 1991-09-24 1991-01-17 1993-03-04 1991-10-02
10TH PERCENTILE 0.000 0.000 0.100 0.004 0.001
MEDIAN 0.000 0.000 0.100 0.005 0.001
90TH PERCENTILE 0.001 0.001 0.100 0.023 0.005
MAXIMUM 0.002 0.001 0.150 0.106 0.005
DATE OF MAXIMUM 1993-12-09 1991-07-16 1991-05-21 1993-12-09 1991-07-16
STANDARD DEVIATION 0.000 0.000 0.007 0.017 0.002
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 - 1991-01-01 TO 1993-12-31
PERIOD OF RECORD FROM - 1991-01-04 TO 1993-12-15
STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED
ELEC TEMP NO3NO2 NH3 PERCENT
COND DO SAT
02041 02061 07105 07556 08001
us/cm deg C mg/L N mg/L N PERCENT
NO. OF L-FLAGGED VALUES 0 0 0 4 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 102 73 103 80 69
MEAN 288. 10.6 2.17 0.08 91.
MINIMUM 128. 2.0 0.72 0.01 72.
DATE OF MINIMUM 1991-11-06 1993-11-24 1992-09-09 1991-04-10 1991-07-08
10TH PERCENTILE 164. 4.6 1.18 0.02 83.
MEDIAN 284. 10.0 2.14 0.06 91.
90TH PERCENTILE 367. 17.7 3.26 0.16 98.
MAXIMUM 1145. 20.5 3.68 0.43 106.
DATE OF MAXIMUM 1992-09-08 1991-07-08 1993-05-28 1993-05-14 1991-12-04
STANDARD DEVIATION 123. 4.8 0.76 0.06 6.
O2 BOD pH SUSP SOL Cl
DISS 105 DEG DISS
08101 08201 10301 10401 17203
mg/L O2 mg/L O2 pH UNITS mg/L mg/L Cl
NO. OF L-FLAGGED VALUES 0 4 0 3 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 72 69 75 80 49
MEAN 10.2 1. 7.6 7. 30.
MINIMUM 6.5 0. 5.9 1. 17.
DATE OF MINIMUM 1991-07-08 1992-03-19 1993-05-28 1991-12-04 1992-11-26
10TH PERCENTILE 8.3 1. 7.4 2. 19.
MEDIAN 10.4 1. 7.7 4. 31.
90TH PERCENTILE 11.8 2. 7.9 16. 43.
MAXIMUM 12.7 5. 8.2 57. 49.
DATE OF MAXIMUM 1992-01-30 1993-05-28 1993-07-02 1993-05-28 1991-02-04
STANDARD DEVIATION 1.3 1. 0.3 9. 8.
DDT LINDANE ALDRIN DIELDRIN Cr
TOTAL TOTAL
18002 18070 18130 18150 24002
ug/L ug/L ug/L ug/L mg/L Cr
NO. OF L-FLAGGED VALUES 17 17 17 17 24
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 16 16 16 16 27
MEAN 0.004 0.004 0.004 0.004 0.005
MINIMUM 0.003 0.003 0.003 0.003 0.001
DATE OF MINIMUM 1991-01-22 1991-01-22 1991-01-22 1991-01-22 1991-11-06
10TH PERCENTILE 0.003 0.003 0.003 0.003 0.001
MEDIAN 0.003 0.003 0.003 0.003 0.002
90TH PERCENTILE 0.005 0.005 0.005 0.005 0.010
MAXIMUM 0.005 0.005 0.005 0.005 0.010
DATE OF MAXIMUM 1993-12-15 1993-12-15 1993-12-15 1993-12-15 1991-09-09
STANDARD DEVIATION 0.001 0.001 0.001 0.001 0.004
Cr Fe Fe Ni Ni
DISS TOTAL DISS TOTAL DISS
24052 26004 26104 28001 28101
mg/L Cr mg/L Fe mg/L Fe mg/L Ni mg/L Ni
NO. OF L-FLAGGED VALUES 9 1 0 10 9
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 14 16 23 24 14
MEAN 0.010 0.19 0.15 0.004 0.010
MINIMUM 0.002 0.01 0.03 0.001 0.003
DATE OF MINIMUM 1993-05-14 1991-05-08 1993-05-14 1991-12-05 1993-05-14
10TH PERCENTILE 0.002 0.09 0.06 0.001 0.003
MEDIAN 0.010 0.19 0.11 0.003 0.005
90TH PERCENTILE 0.010 0.24 0.18 0.010 0.010
MAXIMUM 0.100 0.30 0.95 0.010 0.100
DATE OF MAXIMUM 1991-02-19 1991-07-31 1991-02-19 1991-08-13 1991-02-19
STANDARD DEVIATION 0.020 0.06 0.18 0.003 0.020
Cu Cu Zn As As
TOTAL DISS TOTAL TOTAL DISS
29006 29106 30004 33007 33104
mg/L Cu mg/L Cu mg/L Zn mg/L As mg/L As
NO. OF L-FLAGGED VALUES 19 22 1 24 10
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 33 20 69 15 13
MEAN 0.005 0.011 0.022 0.002 0.002
MINIMUM 0.001 0.002 0.002 0.002 0.002
DATE OF MINIMUM 1992-11-10 1993-05-14 1991-05-08 1991-02-19 1991-02-19
10TH PERCENTILE 0.002 0.002 0.009 0.002 0.002
MEDIAN 0.005 0.005 0.018 0.002 0.002
90TH PERCENTILE 0.007 0.043 0.031 0.002 0.002
MAXIMUM 0.018 0.070 0.186 0.002 0.002
DATE OF MAXIMUM 1993-07-20 1991-02-04 1991-04-29 1993-11-17 1993-12-15
STANDARD DEVIATION 0.003 0.018 0.025 0.000 0.000
Cd Ba Pb Pb INST
TOTAL TOTAL TOTAL DISS DISCHG
48001 80016 82001 82101 97160
mg/L Cd ug/L Hg mg/L Pb mg/L Pb m3/S
NO. OF L-FLAGGED VALUES 54 9 22 9 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 43 17 11 14 38
MEAN 0.000 0.037 0.009 0.010 30.9
MINIMUM 0.000 0.008 0.001 0.001 11.2
DATE OF MINIMUM 1992-01-03 1993-05-28 1991-12-05 1993-02-15 1992-01-30
10TH PERCENTILE 0.000 0.008 0.001 0.002 11.6
MEDIAN 0.000 0.010 0.010 0.004 20.5
90TH PERCENTILE 0.001 0.100 0.017 0.010 78.1
MAXIMUM 0.004 0.100 0.025 0.100 94.2
DATE OF MAXIMUM 1991-03-19 1991-12-05 1991-05-08 1991-02-19 1992-03-24
STANDARD DEVIATION 0.001 0.040 0.007 0.020 24.9
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 - 1991-01-01 TO 1993-12-31
PERIOD OF RECORD FROM - 1991-01-22 TO 1993-11-29
STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED
ELEC TEMP NO3NO2 NH3 PERCENT
COND DO SAT
02041 02061 07105 07556 08001
us/cm deg C mg/L N mg/L N PERCENT
NO. OF L-FLAGGED VALUES 0 0 1 2 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 33 53 31 32 34
MEAN 66. 9.4 0.24 0.04 95.
MINIMUM 39. 0.0 0.10 0.01 80.
DATE OF MINIMUM 1992-11-09 1993-01-28 1991-06-11 1991-06-11 1992-12-03
10TH PERCENTILE 52. 4.0 0.10 0.01 85.
MEDIAN 66. 8.0 0.22 0.04 96.
90TH PERCENTILE 79. 16.0 0.43 0.09 104.
MAXIMUM 127. 17.0 0.99 0.16 107.
DATE OF MAXIMUM 1992-04-24 1991-08-20 1991-07-22 1991-07-22 1993-05-07
STANDARD DEVIATION 15. 4.6 0.18 0.04 6.
O2 BOD ALK pH SUSP SOL
DISS TOTAL 105 DEG
08101 08201 10101 10301 10401
mg/L O2 mg/L O2 mg/L pH UNITS mg/L
NO. OF L-FLAGGED VALUES 0 0 0 0 2
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 34 34 33 33 57
MEAN 11.1 2. 12.63 7.0 3.
MINIMUM 9.0 0. 1.70 6.5 1.
DATE OF MINIMUM 1993-09-10 1992-09-11 1993-04-24 1993-03-17 1991-02-19
10TH PERCENTILE 9.5 1. 11.00 6.6 1.
MEDIAN 11.4 2. 12.00 7.0 2.
90TH PERCENTILE 12.2 3. 15.79 7.3 4.
MAXIMUM 13.0 4. 24.00 7.5 21.
DATE OF MAXIMUM 1991-02-13 1991-02-13 1991-04-19 1991-06-11 1993-01-15
STANDARD DEVIATION 1.0 1. 3.75 0.3 3.
Cl DDT LINDANE ALDRIN DIELDRIN
DISS TOTAL
17203 18002 18070 18130 18150
mg/L Cl ug/L ug/L ug/L ug/L
NO. OF L-FLAGGED VALUES 0 9 3 9 15
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 21 12 19 13 7
MEAN 10. 0.009 0.003 0.004 0.003
MINIMUM 8. 0.001 0.001 0.001 0.002
DATE OF MINIMUM 1992-08-18 1991-08-15 1991-02-19 1991-02-19 1991-01-22
10TH PERCENTILE 9. 0.002 0.002 0.001 0.002
MEDIAN 10. 0.005 0.004 0.002 0.002
90TH PERCENTILE 13. 0.018 0.005 0.005 0.005
MAXIMUM 16. 0.050 0.006 0.022 0.010
DATE OF MAXIMUM 1992-07-30 1991-06-28 1991-08-15 1993-01-28 1992-10-30
STANDARD DEVIATION 2. 0.011 0.001 0.005 0.002
Cr Cr Ni Ni Cu
TOTAL DISS TOTAL DISS TOTAL
24002 24052 28001 28101 29006
mg/L Cr mg/L Cr mg/L Ni mg/L Ni mg/L Cu
NO. OF L-FLAGGED VALUES 20 22 15 21 14
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 8 6 12 7 14
MEAN 0.001 0.001 0.001 0.001 0.001
MINIMUM 0.001 0.001 0.001 0.001 0.001
DATE OF MINIMUM 1991-02-19 1991-02-19 1991-03-19 1991-02-19 1991-03-19
10TH PERCENTILE 0.001 0.001 0.001 0.001 0.001
MEDIAN 0.001 0.001 0.001 0.001 0.001
90TH PERCENTILE 0.001 0.001 0.002 0.001 0.002
MAXIMUM 0.003 0.001 0.004 0.002 0.003
DATE OF MAXIMUM 1993-04-15 1993-06-09 1992-10-13 1991-03-15 1991-02-19
STANDARD DEVIATION 0.000 0.000 0.001 0.000 0.000
Cu Zn Zn Cd Cd
DISS TOTAL DISS TOTAL DISS
29106 30004 30104 48001 48101
mg/L Cu mg/L Zn mg/L Zn mg/L Cd mg/L Cd
NO. OF L-FLAGGED VALUES 19 0 0 17 12
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 9 28 28 13 5
MEAN 0.001 0.006 0.004 0.000 0.001
MINIMUM 0.001 0.002 0.002 0.000 0.000
DATE OF MINIMUM 1991-02-22 1992-08-20 1991-09-13 1991-01-22 1993-06-09
10TH PERCENTILE 0.001 0.003 0.002 0.000 0.001
MEDIAN 0.001 0.005 0.004 0.000 0.001
90TH PERCENTILE 0.001 0.009 0.005 0.001 0.001
MAXIMUM 0.002 0.011 0.006 0.001 0.001
DATE OF MAXIMUM 1991-03-15 1991-02-22 1993-04-15 1992-01-28 1993-04-15
STANDARD DEVIATION 0.000 0.002 0.001 0.000 0.000
Ba Pb Pb
TOTAL TOTAL DISS
80016 82001 82101
ug/L Hg mg/L Pb mg/L Pb
NO. OF L-FLAGGED VALUES 8 8 14
NO. OF G-FLAGGED VALUES 0 0 0
NO. OF UNFLAGGED VALUES 2 20 14
MEAN 0.004 0.002 0.002
MINIMUM 0.004 0.001 0.001
DATE OF MINIMUM 1991-01-22 1991-03-19 1991-03-19
10TH PERCENTILE 0.004 0.001 0.001
MEDIAN 0.004 0.002 0.001
90TH PERCENTILE 0.005 0.004 0.002
MAXIMUM 0.007 0.010 0.006
DATE OF MAXIMUM 1991-09-13 1991-02-22 1991-02-22
STANDARD DEVIATION 0.001 0.002 0.001
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 - 1991-01-01 TO 1993-12-31
PERIOD OF RECORD FROM - 1991-01-08 TO 1993-12-21
STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED
ELEC TEMP NO3NO2 NH3 PERCENT
COND DO SAT
02041 02061 07105 07556 08001
us/cm deg C mg/L N mg/L N PERCENT
NO. OF L-FLAGGED VALUES 0 0 0 3 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 191 191 187 186 171
MEAN 628. 11.5 3.57 3.61 61.
MINIMUM 288. 2.5 1.40 0.05 6.
DATE OF MINIMUM 1992-12-01 1991-02-12 1992-07-07 1992-08-25 1993-05-11
10TH PERCENTILE 405. 5.4 2.69 1.06 47.
MEDIAN 632. 11.0 3.54 3.58 62.
90TH PERCENTILE 795. 18.0 4.47 6.50 78.
MAXIMUM 1577. 20.5 5.61 11.80 92.
DATE OF MAXIMUM 1993-09-07 1991-07-30 1993-02-18 1991-09-03 1993-01-13
STANDARD DEVIATION 173. 4.8 0.71 2.03 14.
O2 BOD ALK pH SUSP SOL
DISS TOTAL 105 DEG
08101 08201 10101 10301 10401
mg/L O2 mg/L O2 mg/L pH UNITS mg/L
NO. OF L-FLAGGED VALUES 0 5 1 0 1
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 174 183 182 191 190
MEAN 6.8 4. 108.63 7.3 16.
MINIMUM 0.9 1. 5.00 6.2 2.
DATE OF MINIMUM 1993-11-16 1992-08-03 1992-10-06 1992-09-22 1991-08-06
10TH PERCENTILE 4.5 2. 75.00 7.1 5.
MEDIAN 6.6 3. 110.00 7.3 10.
90TH PERCENTILE 9.4 5. 136.00 7.6 32.
MAXIMUM 10.9 8. 192.00 8.2 150.
DATE OF MAXIMUM 1993-01-13 1993-04-06 1991-09-03 1993-07-27 1992-02-04
STANDARD DEVIATION 1.9 1. 25.28 0.3 17.
Na Mg Si SULPHATE Cl
DISS DISS REACTIVE DISS
11102 12102 14101 16304 17203
mg/L Na mg/L Mg mg/LSiO2 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 161 186 150 164 190
MEAN 63. 8. 8.88 83. 88.
MINIMUM 17. 5. 4.62 39. 21.
DATE OF MINIMUM 1992-01-07 1992-01-07 1991-05-14 1992-12-01 1993-06-01
10TH PERCENTILE 33. 6. 6.69 54. 43.
MEDIAN 64. 8. 8.20 85. 84.
90TH PERCENTILE 92. 10. 11.11 108. 135.
MAXIMUM 160. 19. 23.09 166. 264.
DATE OF MAXIMUM 1991-09-10 1991-09-03 1992-02-04 1991-09-10 1993-04-06
STANDARD DEVIATION 23. 2. 2.77 21. 38.
DDT LINDANE ALDRIN DIELDRIN K
TOTAL DISS
18002 18070 18130 18150 19102
ug/L ug/L ug/L ug/L mg/L K
NO. OF L-FLAGGED VALUES 22 0 23 23 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 15 38 14 15 161
MEAN 0.008 0.035 0.004 0.003 7.3
MINIMUM 0.001 0.003 0.001 0.001 3.5
DATE OF MINIMUM 1992-02-06 1993-08-11 1991-01-21 1992-02-06 1992-01-07
10TH PERCENTILE 0.001 0.005 0.001 0.001 4.8
MEDIAN 0.001 0.030 0.001 0.001 7.4
90TH PERCENTILE 0.006 0.071 0.004 0.003 9.4
MAXIMUM 0.135 0.089 0.078 0.034 11.5
DATE OF MAXIMUM 1992-09-17 1991-07-04 1992-09-17 1992-09-17 1991-09-03
STANDARD DEVIATION 0.023 0.022 0.013 0.005 1.7
Ca Cr Cr Fe Fe
DISS TOTAL DISS TOTAL DISS
20103 24002 24052 26004 26104
mg/L Ca mg/L Cr mg/L Cr 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 186 156 38 149 32
MEAN 43.024 0.007 0.004 0.67 0.25
MINIMUM 26.000 0.002 0.001 0.29 0.12
DATE OF MINIMUM 1993-09-14 1991-12-17 1992-09-17 1993-07-13 1992-04-16
10TH PERCENTILE 35.280 0.003 0.002 0.38 0.15
MEDIAN 43.500 0.006 0.003 0.59 0.23
90TH PERCENTILE 50.000 0.011 0.007 0.95 0.36
MAXIMUM 58.000 0.024 0.022 3.55 0.71
DATE OF MAXIMUM 1991-09-03 1991-04-30 1991-03-19 1991-09-03 1992-10-15
STANDARD DEVIATION 5.722 0.004 0.003 0.37 0.11
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 0 0 0 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 155 37 156 38 186
MEAN 0.008 0.008 0.008 0.006 0.038
MINIMUM 0.000 0.004 0.003 0.003 0.014
DATE OF MINIMUM 1992-02-11 1991-02-26 1991-07-30 1991-07-04 1993-09-07
10TH PERCENTILE 0.006 0.005 0.005 0.003 0.022
MEDIAN 0.008 0.008 0.007 0.005 0.034
90TH PERCENTILE 0.011 0.012 0.014 0.009 0.057
MAXIMUM 0.016 0.013 0.024 0.016 0.125
DATE OF MAXIMUM 1993-09-01 1993-02-18 1993-03-16 1991-01-21 1992-06-23
STANDARD DEVIATION 0.003 0.003 0.004 0.003 0.018
As Cd Ba Hg Pb
DISS TOTAL TOTAL DISS TOTAL
33104 48001 80011 80111 82001
mg/L As mg/L Cd ug/L Hg ug/L Hg mg/L Pb
NO. OF L-FLAGGED VALUES 0 7 4 0 7
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 37 149 142 2 149
MEAN 0.002 0.000 0.145 0.060 0.007
MINIMUM 0.001 0.000 0.016 0.002
DATE OF MINIMUM 1992-03-05 1991-01-08 1992-01-21 1991-08-06
10TH PERCENTILE 0.001 0.000 0.026 0.003
MEDIAN 0.002 0.000 0.080 0.005
90TH PERCENTILE 0.003 0.000 0.305 0.012
MAXIMUM 0.003 0.005 1.140 0.048
DATE OF MAXIMUM 1991-09-19 1991-01-22 1993-09-07 1992-02-04
STANDARD DEVIATION 0.001 0.001 0.183 0.006
Pb INST
DISS DISCHG
82101 97160
mg/L Pb m3/S
NO. OF L-FLAGGED VALUES 14 0
NO. OF G-FLAGGED VALUES 0 0
NO. OF UNFLAGGED VALUES 24 160
MEAN 0.005 30.3
MINIMUM 0.003 2.9
DATE OF MINIMUM 1991-04-22 1991-07-30
10TH PERCENTILE 0.003 6.2
MEDIAN 0.005 18.8
90TH PERCENTILE 0.005 70.6
MAXIMUM 0.006 154.0
DATE OF MAXIMUM 1991-01-21 1992-11-10
STANDARD DEVIATION 0.001 29.6
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 - 1991-01-01 TO 1993-12-31
PERIOD OF RECORD FROM - 1991-01-07 TO 1993-12-21
STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED
ELEC TEMP NO3NO2 NH3 PERCENT
COND DO SAT
02041 02061 07105 07554 08001
us/cm deg C mg/L N mg/L N PERCENT
NO. OF L-FLAGGED VALUES 0 0 0 0 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 147 149 149 149 149
MEAN 148. 9.1 1.06 0.06 98.
MINIMUM 77. 0.0 0.45 0.01 75.
DATE OF MINIMUM 1992-08-13 1991-12-10 1993-09-23 1993-09-23 1992-08-13
10TH PERCENTILE 120. 3.4 0.65 0.02 87.
MEDIAN 148. 8.0 1.05 0.06 94.
90TH PERCENTILE 178. 16.0 1.45 0.11 117.
MAXIMUM 211. 21.0 2.35 0.21 142.
DATE OF MAXIMUM 1991-02-14 1991-08-01 1991-05-27 1992-06-30 1991-08-20
STANDARD DEVIATION 23. 4.8 0.33 0.03 13.
O2 BOD pH SUSP SOL Si
DISS 105 DEG REACTIVE
08101 08201 10301 10401 14101
mg/L O2 mg/L O2 pH UNITS mg/L mg/LSiO2
NO. OF L-FLAGGED VALUES 0 0 0 0 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 149 148 148 138 148
MEAN 11.4 2. 7.7 5. 1.88
MINIMUM 7.4 1. 6.8 1. 0.10
DATE OF MINIMUM 1992-06-30 1991-03-07 1992-11-02 1991-02-07 1991-05-13
10TH PERCENTILE 9.7 1. 7.1 1. 0.70
MEDIAN 11.5 2. 7.4 2. 1.98
90TH PERCENTILE 12.9 3. 8.5 10. 2.81
MAXIMUM 15.5 4. 9.0 105. 3.24
DATE OF MAXIMUM 1991-05-08 1992-09-10 1993-07-13 1992-08-13 1991-02-14
STANDARD DEVIATION 1.3 1. 0.6 10. 0.80
SULPHATE Cl Cr Fe Ni
DISS DISS DISS DISS
16309 17204 24052 26104 28101
mg/L SO4 mg/L Cl mg/L Cr mg/L Fe mg/L Ni
NO. OF L-FLAGGED VALUES 0 0 57 3 106
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 141 149 91 144 42
MEAN 8. 12. 0.001 0.05 0.001
MINIMUM 5. 4. 0.000 0.00 0.001
DATE OF MINIMUM 1993-09-09 1992-01-09 1991-03-07 1993-04-13 1991-01-07
10TH PERCENTILE 6. 8. 0.001 0.02 0.001
MEDIAN 8. 12. 0.001 0.04 0.001
90TH PERCENTILE 9. 14. 0.001 0.09 0.001
MAXIMUM 15. 26. 0.003 0.14 0.002
DATE OF MAXIMUM 1993-07-20 1991-10-08 1992-08-18 1992-02-05 1992-06-03
STANDARD DEVIATION 1. 3. 0.000 0.03 0.000
Cu Zn As Cd Hg
DISS DISS DISS DISS DISS
29106 30104 33104 48101 80111
mg/L Cu mg/L Zn mg/L As mg/L Cd ug/L Hg
NO. OF L-FLAGGED VALUES 0 3 95 116 101
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 148 145 38 32 32
MEAN 0.004 0.004 0.005 0.000 0.101
MINIMUM 0.001 0.001 0.001 0.000 0.100
DATE OF MINIMUM 1991-03-07 1991-12-10 1991-01-07 1991-01-07 1991-01-07
10TH PERCENTILE 0.001 0.001 0.003 0.000 0.100
MEDIAN 0.003 0.003 0.005 0.000 0.100
90TH PERCENTILE 0.008 0.010 0.005 0.000 0.100
MAXIMUM 0.028 0.024 0.005 0.000 0.200
DATE OF MAXIMUM 1993-07-13 1991-07-04 1991-05-22 1993-12-21 1991-02-07
STANDARD DEVIATION 0.004 0.004 0.001 0.000 0.009
Pb
DISS
82101
mg/L Pb
NO. OF L-FLAGGED VALUES 48
NO. OF G-FLAGGED VALUES 0
NO. OF UNFLAGGED VALUES 99
MEAN 0.001
MINIMUM 0.000
DATE OF MINIMUM 1991-07-11
10TH PERCENTILE 0.001
MEDIAN 0.001
90TH PERCENTILE 0.001
MAXIMUM 0.004
DATE OF MAXIMUM 1993-06-23
STANDARD DEVIATION 0.000
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 - 1991-01-01 TO 1993-12-31
PERIOD OF RECORD FROM - 1991-01-17 TO 1993-12-16
STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED
ELEC TEMP NO3NO2 NH3 PERCENT
COND DO SAT
02041 02061 07105 07555 08001
us/cm deg C mg/L N mg/L N PERCENT
NO. OF L-FLAGGED VALUES 0 1 0 6 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 36 35 36 30 36
MEAN 43. 7.8 0.06 0.01 93.
MINIMUM 26. 0.1 0.02 0.00 79.
DATE OF MINIMUM 1992-05-01 1991-05-02 1992-05-01 1991-03-07 1991-08-14
10TH PERCENTILE 30. 2.1 0.03 0.00 84.
MEDIAN 40. 6.8 0.06 0.01 93.
90TH PERCENTILE 54. 14.2 0.10 0.01 100.
MAXIMUM 72. 18.5 0.25 0.03 105.
DATE OF MAXIMUM 1993-02-22 1992-06-11 1993-12-16 1992-12-11 1993-02-22
STANDARD DEVIATION 11. 4.6 0.04 0.01 6.
O2 BOD ALK pH SUSP SOL
DISS TOTAL 105 DEG
08101 08201 10101 10301 10401
mg/L O2 mg/L O2 mg/L pH UNITS mg/L
NO. OF L-FLAGGED VALUES 0 1 0 0 13
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 36 35 36 36 23
MEAN 11.2 1. 3.76 6.4 2.
MINIMUM 8.1 0. 1.30 6.0 0.
DATE OF MINIMUM 1991-08-14 1992-08-27 1992-03-18 1992-05-01 1991-07-10
10TH PERCENTILE 9.4 0. 1.80 6.1 0.
MEDIAN 11.4 1. 3.00 6.3 1.
90TH PERCENTILE 12.9 2. 6.76 6.8 4.
MAXIMUM 13.7 2. 9.50 7.5 16.
DATE OF MAXIMUM 1991-02-12 1992-12-11 1992-06-11 1991-04-15 1993-03-25
STANDARD DEVIATION 1.4 1. 2.03 0.3 3.
Na Mg SULPHATE Cl DDT
DISS DISS DISS TOTAL
11102 12103 16309 17204 18002
mg/L Na mg/L Mg mg/L SO4 mg/L Cl ug/L
NO. OF L-FLAGGED VALUES 0 0 1 0 2
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 2 3 2 35 1
MEAN 5. 1. 2. 10. 0.004
MINIMUM 5.
DATE OF MINIMUM 1992-08-27
10TH PERCENTILE 6.
MEDIAN 9.
90TH PERCENTILE 14.
MAXIMUM 19.
DATE OF MAXIMUM 1993-02-22
STANDARD DEVIATION 3.
LINDANE ALDRIN DIELDRIN K Ca
DISS DISS
18070 18130 18150 19102 20101
ug/L ug/L ug/L mg/L K mg/L Ca
NO. OF L-FLAGGED VALUES 3 3 3 0 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 8 0 0 2 3
MEAN 0.007 0.000 0.002 0.4 2.733
MINIMUM 0.002
DATE OF MINIMUM 1993-04-20
10TH PERCENTILE 0.002
MEDIAN 0.002
90TH PERCENTILE 0.010
MAXIMUM 0.038
DATE OF MAXIMUM 1993-05-13
STANDARD DEVIATION 0.011
Cr Ni Cu Zn As
TOTAL TOTAL TOTAL TOTAL TOTAL
24002 28001 29006 30004 33007
mg/L Cr mg/L Ni mg/L Cu mg/L Zn mg/L As
NO. OF L-FLAGGED VALUES 23 23 15 0 23
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 13 13 20 36 13
MEAN 0.001 0.001 0.002 0.003 0.003
MINIMUM 0.001 0.001 0.001 0.001 0.001
DATE OF MINIMUM 1991-01-17 1991-01-17 1991-01-17 1991-03-07 1991-10-23
10TH PERCENTILE 0.001 0.001 0.001 0.001 0.003
MEDIAN 0.001 0.001 0.001 0.003 0.003
90TH PERCENTILE 0.001 0.001 0.006 0.006 0.003
MAXIMUM 0.002 0.002 0.015 0.013 0.003
DATE OF MAXIMUM 1991-02-12 1992-05-01 1992-07-09 1993-11-08 1991-09-24
STANDARD DEVIATION 0.000 0.000 0.003 0.003 0.000
Cd Ba Pb INST
TOTAL TOTAL TOTAL DISCHG
48001 80016 82001 97160
mg/L Cd ug/L Hg mg/L Pb m3/S
NO. OF L-FLAGGED VALUES 22 23 19 0
NO. OF G-FLAGGED VALUES 0 0 0 0
NO. OF UNFLAGGED VALUES 14 13 17 36
MEAN 0.001 0.022 0.001 9.4
MINIMUM 0.000 0.020 0.001 0.6
DATE OF MINIMUM 1991-03-07 1991-01-17 1991-01-17 1992-06-11
10TH PERCENTILE 0.001 0.020 0.001 0.9
MEDIAN 0.001 0.020 0.001 4.9
90TH PERCENTILE 0.001 0.020 0.001 24.3
MAXIMUM 0.001 0.091 0.007 58.4
DATE OF MAXIMUM 1991-02-12 1992-07-09 1992-02-21 1991-09-24
STANDARD DEVIATION 0.000 0.012 0.001 13.0
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 - 1991-01-01 TO 1993-12-31
PERIOD OF RECORD FROM - 1991-01-08 TO 1993-12-30
STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED
INTEG ELEC NO3NO2 pH Si
SAMPLE COND REACTIVE
00190 02041 07105 10302 14101
N/A us/cm mg/L N pH UNITS 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 97 94 93 96 95
MEAN 1. 298. 0.46 8.3 3.24
MINIMUM 1. 108. 0.00 7.3 0.01
DATE OF MINIMUM 1991-01-08 1993-06-28 1991-08-27 1991-12-02 1993-05-03
10TH PERCENTILE 1. 243. 0.04 7.7 0.08
MEDIAN 1. 314. 0.40 8.3 2.14
90TH PERCENTILE 1. 329. 0.96 8.8 7.14
MAXIMUM 1. 334. 1.36 9.1 7.97
DATE OF MAXIMUM 1993-12-30 1991-11-19 1991-01-28 1993-06-28 1992-01-13
STANDARD DEVIATION 0. 48. 0.36 0.4 2.96
SILICATE P
REACTIVE TOTAL
14105 15405
mg/LSiO2 mg/L P
NO. OF L-FLAGGED VALUES 0 0
NO. OF G-FLAGGED VALUES 0 0
NO. OF UNFLAGGED VALUES 95 64
MEAN 0.077 0.100
MINIMUM 0.000 0.033
DATE OF MINIMUM 1991-02-11 1992-06-01
10TH PERCENTILE 0.000 0.051
MEDIAN 0.100 0.113
90TH PERCENTILE 0.144 0.136
MAXIMUM 0.362 0.215
DATE OF MAXIMUM 1993-07-05 1992-07-06
STANDARD DEVIATION 0.061 0.038
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 - 1991-01-01 TO 1993-12-31
PERIOD OF RECORD FROM - 1991-01-09 TO 1993-12-20
STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED
ELEC TEMP NO3NO2 NH3 PERCENT
COND DO SAT
02041 02061 07105 07556 08001
us/cm deg C mg/L N mg/L N PERCENT
NO. OF L-FLAGGED VALUES 0 0 0 7 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 36 135 184 175 33
MEAN 880. 15.9 4.83 0.04 82.
MINIMUM 788. 0.0 1.32 0.02 54.
DATE OF MINIMUM 1993-11-17 1991-12-10 1991-01-09 1991-06-24 1993-07-28
10TH PERCENTILE 809. 8.0 3.33 0.02 65.
MEDIAN 878. 16.6 4.93 0.03 84.
90TH PERCENTILE 936. 21.0 6.41 0.06 93.
MAXIMUM 997. 25.0 7.02 0.19 99.
DATE OF MAXIMUM 1992-06-03 1992-07-20 1992-04-14 1991-07-15 1991-03-07
STANDARD DEVIATION 48. 5.0 1.12 0.02 10.
O2 BOD ALK pH SUSP SOL
DISS TOTAL 105 DEG
08101 08201 10101 10301 10401
mg/L O2 mg/L O2 mg/L pH UNITS mg/L
NO. OF L-FLAGGED VALUES 0 4 0 0 8
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 34 32 165 164 28
MEAN 9.1 1. 117.69 8.0 5.
MINIMUM 5.2 1. 10.00 7.6 1.
DATE OF MINIMUM 1993-07-28 1992-05-05 1993-08-16 1991-10-21 1991-06-06
10TH PERCENTILE 6.1 1. 107.15 7.9 1.
MEDIAN 9.4 1. 117.00 8.0 5.
90TH PERCENTILE 11.0 2. 130.00 8.2 6.
MAXIMUM 12.6 3. 190.00 8.5 14.
DATE OF MAXIMUM 1991-03-07 1991-07-31 1991-02-06 1993-04-05 1992-02-05
STANDARD DEVIATION 1.9 0. 14.17 0.2 2.
Na Si SULPHATE Cl DDT
DISS REACTIVE DISS TOTAL
11102 14101 16304 17203 18002
mg/L Na mg/LSiO2 mg/L SO4 mg/L Cl ug/L
NO. OF L-FLAGGED VALUES 0 0 0 0 8
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 36 141 72 55 4
MEAN 48. 1.70 177. 75. 0.001
MINIMUM 43. 0.16 135. 58. 0.001
DATE OF MINIMUM 1991-11-27 1993-04-19 1991-01-09 1993-08-25 1991-02-06
10TH PERCENTILE 44. 0.39 158. 69. 0.001
MEDIAN 48. 1.29 171. 75. 0.001
90TH PERCENTILE 54. 3.45 205. 82. 0.001
MAXIMUM 56. 5.04 229. 87. 0.003
DATE OF MAXIMUM 1992-07-30 1992-02-17 1992-07-02 1992-05-05 1992-07-30
STANDARD DEVIATION 4. 1.18 19. 6. 0.001
LINDANE ALDRIN DIELDRIN K Cr
DISS TOTAL
18070 18130 18150 19102 24002
ug/L ug/L ug/L mg/L K mg/L Cr
NO. OF L-FLAGGED VALUES 0 8 8 0 4
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 12 4 4 36 8
MEAN 0.009 0.001 0.001 8.5 0.002
MINIMUM 0.004 0.001 0.001 6.5 0.001
DATE OF MINIMUM 1992-05-05 1991-02-06 1991-02-06 1991-11-27 1991-03-07
10TH PERCENTILE 0.004 0.001 0.001 7.9 0.001
MEDIAN 0.009 0.001 0.001 8.4 0.001
90TH PERCENTILE 0.015 0.001 0.001 9.2 0.002
MAXIMUM 0.020 0.001 0.001 9.6 0.006
DATE OF MAXIMUM 1991-05-23 1993-10-20 1993-10-20 1992-04-01 1991-11-27
STANDARD DEVIATION 0.005 0.000 0.000 0.6 0.001
Fe Fe Ni Cu Zn
TOTAL DISS TOTAL TOTAL TOTAL
26004 26104 28001 29006 30004
mg/L Fe mg/L Fe mg/L Ni mg/L Cu mg/L Zn
NO. OF L-FLAGGED VALUES 9 77 0 0 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 120 62 12 12 12
MEAN 0.26 0.01 0.006 0.010 0.021
MINIMUM 0.01 0.01 0.003 0.003 0.006
DATE OF MINIMUM 1991-09-02 1991-04-22 1993-08-25 1992-06-03 1992-06-03
10TH PERCENTILE 0.01 0.01 0.003 0.003 0.006
MEDIAN 0.04 0.01 0.004 0.008 0.010
90TH PERCENTILE 0.10 0.02 0.007 0.017 0.048
MAXIMUM 27.00 0.10 0.018 0.030 0.074
DATE OF MAXIMUM 1993-08-23 1991-11-27 1993-03-03 1991-08-29 1991-08-29
STANDARD DEVIATION 2.37 0.01 0.004 0.008 0.022
As Cd Ba Pb
TOTAL TOTAL TOTAL TOTAL
33007 48001 80011 82001
mg/L As mg/L Cd ug/L Hg mg/L Pb
NO. OF L-FLAGGED VALUES 0 4 4 0
NO. OF G-FLAGGED VALUES 0 0 0 0
NO. OF UNFLAGGED VALUES 12 8 8 12
MEAN 0.001 0.000 0.050 0.002
MINIMUM 0.001 0.000 0.050 0.001
DATE OF MINIMUM 1991-06-06 1991-03-07 1991-03-07 1991-06-06
10TH PERCENTILE 0.001 0.000 0.050 0.001
MEDIAN 0.001 0.000 0.050 0.001
90TH PERCENTILE 0.001 0.000 0.050 0.003
MAXIMUM 0.002 0.000 0.050 0.004
DATE OF MAXIMUM 1991-03-07 1993-11-17 1993-11-17 1992-03-04
STANDARD DEVIATION 0.000 0.000 0.000 0.001
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 - 1991-01-01 TO 1993-12-31
PERIOD OF RECORD FROM - 1991-01-15 TO 1993-12-01
STATISTICS INCLUDE ALL FLAGGED DATA AS REPORTED
ELEC TEMP NO3NO2 NH3 PERCENT
COND DO SAT
02041 02062 07105 07555 08001
us/cm deg C mg/L N mg/L N PERCENT
NO. OF L-FLAGGED VALUES 0 0 3 7 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 18 42 38 37 42
MEAN 131. 9.2 0.71 0.21 83.
MINIMUM 26. 1.0 0.05 0.03 15.
DATE OF MINIMUM 1991-05-21 1991-01-15 1991-09-17 1991-01-15 1993-06-21
10TH PERCENTILE 70. 3.4 0.21 0.03 56.
MEDIAN 96. 8.8 0.53 0.10 86.
90TH PERCENTILE 140. 15.0 0.94 0.51 98.
MAXIMUM 694. 16.0 7.12 1.10 103.
DATE OF MAXIMUM 1993-11-16 1993-07-26 1991-02-19 1992-02-19 1992-11-16
STANDARD DEVIATION 143. 4.7 1.06 0.26 18.
O2 BOD ALK pH SUSP SOL
DISS TOTAL 105 DEG
08101 08201 10102 10301 10401
mg/L O2 mg/L O2 mg/L pH UNITS mg/L
NO. OF L-FLAGGED VALUES 0 7 3 0 3
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 38 34 32 43 40
MEAN 9.9 1. 26.02 7.3 5.
MINIMUM 1.6 0. 10.00 3.7 0.
DATE OF MINIMUM 1993-06-21 1991-02-19 1991-03-19 1991-02-19 1991-02-19
10TH PERCENTILE 6.9 1. 10.00 6.8 1.
MEDIAN 10.4 1. 27.00 7.4 4.
90TH PERCENTILE 12.3 2. 44.00 8.0 10.
MAXIMUM 13.1 5. 55.00 8.2 28.
DATE OF MAXIMUM 1991-01-15 1993-06-21 1992-10-19 1991-04-16 1991-12-17
STANDARD DEVIATION 2.4 1. 13.35 0.7 6.
Na Mg Si SULPHATE Cl
DISS DISS REACTIVE DISS
11102 12102 14101 16303 17203
mg/L Na mg/L Mg mg/LSiO2 mg/L SO4 mg/L Cl
NO. OF L-FLAGGED VALUES 0 0 0 0 2
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 5 5 5 8 27
MEAN 7. 2. 3.52 15. 12.
MINIMUM 6. 2. 1.50 12. 3.
DATE OF MINIMUM 1993-11-16 1993-11-16 1993-02-22 1991-05-21 1991-01-15
10TH PERCENTILE 10.
MEDIAN 7. 2. 3.60 14. 11.
90TH PERCENTILE 15.
MAXIMUM 7. 3. 4.95 23. 17.
DATE OF MAXIMUM 1991-05-21 1993-08-26 1992-11-18 1992-02-19 1991-01-28
STANDARD DEVIATION 1. 0. 1.37 3. 2.
DDT LINDANE ALDRIN DIELDRIN K
TOTAL DISS
18002 18070 18130 18150 19102
ug/L ug/L ug/L ug/L mg/L K
NO. OF L-FLAGGED VALUES 16 16 16 16 0
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 12 12 12 12 6
MEAN 0.002 0.002 0.002 0.002 1.1
MINIMUM 0.001 0.001 0.001 0.001 0.9
DATE OF MINIMUM 1991-07-16 1991-05-21 1991-07-16 1991-07-16 1993-02-22
10TH PERCENTILE 0.002 0.002 0.002 0.002
MEDIAN 0.002 0.002 0.002 0.002 1.0
90TH PERCENTILE 0.002 0.002 0.002 0.002
MAXIMUM 0.002 0.003 0.002 0.002 1.4
DATE OF MAXIMUM 1991-08-19 1993-08-26 1991-08-19 1991-08-19 1991-11-18
STANDARD DEVIATION 0.000 0.000 0.000 0.000 0.2
Ca Cr Fe Fe Ni
DISS TOTAL TOTAL DISS TOTAL
20103 24002 26004 26104 28001
mg/L Ca mg/L Cr mg/L Fe mg/L Fe mg/L Ni
NO. OF L-FLAGGED VALUES 0 1 0 0 1
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 6 1 4 4 0
MEAN 8.183 0.008 0.92 0.92 0.009
MINIMUM 7.400 0.16 0.16
DATE OF MINIMUM 1991-05-21 1991-05-21 1991-05-21
10TH PERCENTILE
MEDIAN 7.650 1.06 1.06
90TH PERCENTILE
MAXIMUM 10.500 1.40 1.40
DATE OF MAXIMUM 1993-08-26 1991-10-28 1991-10-28
STANDARD DEVIATION 1.206 0.57 0.57
Cu Zn As Cd Cd
TOTAL TOTAL TOTAL TOTAL DISS
29006 30004 33007 48001 48101
mg/L Cu mg/L Zn mg/L As mg/L Cd mg/L Cd
NO. OF L-FLAGGED VALUES 1 0 1 2 2
NO. OF G-FLAGGED VALUES 0 0 0 0 0
NO. OF UNFLAGGED VALUES 3 4 1 6 6
MEAN 0.009 0.029 0.005 0.001 0.000
MINIMUM 0.003 0.004 0.000 0.000
DATE OF MINIMUM 1992-07-30 1992-07-30 1991-02-19 1991-02-19
10TH PERCENTILE
MEDIAN 0.005 0.035 0.000 0.000
90TH PERCENTILE
MAXIMUM 0.023 0.043 0.004 0.000
DATE OF MAXIMUM 1992-11-16 1991-11-18 1991-11-18 1993-11-16
STANDARD DEVIATION 0.009 0.018 0.001 0.000
Ba Hg Pb
TOTAL DISS TOTAL
80011 80111 82001
ug/L Hg ug/L Hg mg/L Pb
NO. OF L-FLAGGED VALUES 1 0 0
NO. OF G-FLAGGED VALUES 0 0 0
NO. OF UNFLAGGED VALUES 10 7 1
MEAN 0.164 0.130 0.002
MINIMUM 0.020 0.040
DATE OF MINIMUM 1991-10-28 1993-11-16
10TH PERCENTILE 0.022
MEDIAN 0.093 0.055
90TH PERCENTILE 0.213
MAXIMUM 0.760 0.500
DATE OF MAXIMUM 1991-08-19 1991-08-19
STANDARD DEVIATION 0.208 0.165
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