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Table 5. Number of analyses and minimum, median, and maximum polychlorinated biphenyl and lipid-normalized polychlorinated biphenyl concentrations in walleye for each river segment within three time periods: 1975-79, 1980-87, and 1988-95 (data from Minnesota Fish Contaminants Monitoring Program and Wisconsin Department of Natural Resources) 
[na, not applicable; --, no data]
1975-1979
1980-1987
1988-1995
P-value among time periods
Percent change between 1975-79 and 1988-95 medians
Segment 
Statistic
Non-normalized
Lipid- normalized
Non-normalized
Lipid-normalized
Non- normalized
Lipid- normalized
Lipid-normalized
Lipid-normalized
UMR-1
Number
2
2
2
2
6
6
na
+12
Minimum
0.07
7.0
0.07
5.4
0.07
2.4
Median
0.07
10.5
0.07
7.1
0.07
12.0
Maximum
0.07
14.0
0.07
8.8
0.07
70.0
UMR-2
Number
1
1
3
3
--
--
na
--
Minimum
0.8
114.9
0.2
14.6
--
--
Median
0.8
114.9
0.3
16.7
--
--
Maximum
0.8
114.9
0.3
38.6
--
--
UMR-3
Number
2
2
2
2
2
2
na
-88
Minimum
0.3
37.5
0.2
22.9
0.1
6.7
Median
0.4
64.6
0.2
24.6
0.1
7.2
Maximum
0.6
91.7
0.2
26.2
0.2
7.7
UMR-4
Number
2
2
12
12
--
--
na
--
Minimum
6.5
282.6
0.1
16.0
--
--
Median
8.2
374.6
0.4
44.5
--
--
Maximum
9.8
466.7
3.8
230.0
--
--
UMR-5
Number
12
12
16
15
7
7
0.000
-77
Minimum
0.3
50.0
0.1
12.5
0.2
16.7
Median
1.0
118.3
0.6
63.2
0.5
26.9
Maximum
1.6
180.0
3.6
100.0
1.1
84.6
SC-1
Number
--
--
--
--
11
11
na
--
Minimum
--
--
--
--
0.07
4.1
Median
--
--
--
--
0.07
7.0
Maximum
--
--
--
--
0.07
11.7
SC-2
Number
--
--
5
4
2
2
na
--
Minimum
--
--
0.07
14.0
0.2
20.0
Median
--
--
0.3
33.7
0.4
35.0
Maximum
--
--
0.7
55.0
0.6
50.0
MN-1
Number
--
--
--
--
3
3
na
--
Minimum
--
--
--
--
0.07
8.8
Median
--
--
--
--
0.07
14.0
Maximum
--
--
--
--
0.07
14.0
MN-2
Number
2
2
5
5
2
2
na
-94
Minimum
0.6
130.0
0.1
20.0
0.07
10.0
Median
1.1
165.6
0.2
35.0
0.07
10.9
Maximum
1.6
201.2
0.5
58.8
0.1
11.8
P-value among segments within each time period
0.019
0.044
0.005
 

Back to Water-Quality Assessment of the Upper  Mississippi River Basin, Minnesota and Wisconsin--Polychlorinated Biphenyls in Common Carp and Walleye Fillets, 1975-95
 

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