Table 7.
Descriptive statistics for selenium and solids results by sampling location, species, and sample type
| Measure | Site | Species | Sample type | Count | Selenium concentration (ng/g) | RSD (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 25th Percentile | Median | Mean | 75th Percentile | Max | SD | ||||||
| Se (ng/g ww) | Anacostia River | Blue Catfish | FP | 20 | 139.0 | 154.5 | 172.5 | 172.0 | 179.0 | 234.0 | 21.6 | 12.5 |
| HF | 20 | 145.0 | 158.5 | 170.0 | 167.2 | 177.5 | 182.0 | 12.6 | 7.5 | |||
| Potomac River | Largemouth Bass | FP | 20 | 264.0 | 314.5 | 340.0 | 344.8 | 377.0 | 434.0 | 53.7 | 15.6 | |
| HF | 20 | 290.0 | 309.5 | 318.0 | 350.3 | 401.0 | 437.0 | 55.6 | 15.9 | |||
| St. Lawrence River | Smallmouth Bass | FP | 20 | 736.0 | 759.5 | 783.5 | 789.9 | 815.5 | 848.0 | 37.1 | 4.7 | |
| HF | 20 | 829.0 | 846.5 | 889.0 | 879.7 | 906.0 | 932.0 | 33.5 | 3.8 | |||
| Lake Michigan | Lake Trout | FP | 20 | 599.0 | 621.0 | 718.5 | 701.3 | 755.0 | 823.0 | 76.1 | 10.8 | |
| HF | 20 | 578.0 | 624.0 | 661.5 | 694.8 | 775.0 | 867.0 | 89.1 | 12.8 | |||
| Lake Erie | Walleye | FP | 20 | 360.0 | 387.0 | 437.0 | 422.3 | 450.5 | 469.0 | 36.7 | 8.7 | |
| HF | 20 | 367.0 | 395.5 | 437.5 | 433.9 | 465.5 | 491.0 | 39.9 | 9.2 | |||
| Lake Ontario | Chinook Salmon | FP | 20 | 428.0 | 442.5 | 461.0 | 463.0 | 479.5 | 504.0 | 23.4 | 5.0 | |
| HF | 20 | 452.0 | 466.5 | 490.0 | 486.1 | 502.5 | 534.0 | 22.4 | 4.6 | |||
| Se (ng/g dw) | Anacostia River | Blue Catfish | FP | 20 | 711.0 | 765.5 | 834.0 | 848.0 | 899.0 | 1158.0 | 106.9 | 12.6 |
| HF | 20 | 750.0 | 841.5 | 868.0 | 854.0 | 884.0 | 925.0 | 48.4 | 5.7 | |||
| Potomac River | Largemouth Bass | FP | 20 | 1389.0 | 1565.0 | 1658.5 | 1678.0 | 1811.0 | 1978.0 | 190.2 | 11.3 | |
| HF | 20 | 1452.0 | 1512.5 | 1573.5 | 1670.0 | 1858.5 | 1993.0 | 183.1 | 11.0 | |||
| St. Lawrence River | Smallmouth Bass | FP | 20 | 3211.0 | 3355.0 | 3441.0 | 3458.0 | 3539.0 | 3814.0 | 147.9 | 4.3 | |
| HF | 20 | 3647.0 | 3798.0 | 3842.5 | 3869.0 | 3956.0 | 4084.0 | 112.0 | 2.9 | |||
| Lake Michigan | Lake Trout | FP | 20 | 1619.0 | 1724.0 | 1873.5 | 2014.0 | 2293.0 | 2669.0 | 359.9 | 17.9 | |
| HF | 20 | 1495.0 | 1631.5 | 1749.0 | 1917.0 | 2310.0 | 2611.0 | 364.2 | 19.0 | |||
| Lake Erie | Walleye | FP | 20 | 1549.0 | 1718.0 | 1896.5 | 1888.0 | 2040.5 | 2176.0 | 193.6 | 10.3 | |
| HF | 20 | 1643.0 | 1792.0 | 1912.0 | 1934.0 | 2062.5 | 2299.0 | 178.8 | 9.2 | |||
| Lake Ontario | Chinook Salmon | FP | 20 | 1427.0 | 1544.5 | 1630.5 | 1645.0 | 1761.0 | 1925.0 | 146.8 | 8.9 | |
| HF | 20 | 1432.0 | 1698.0 | 1765.5 | 1734.0 | 1818.0 | 1922.0 | 131.9 | 7.6 | |||
| Total Solids (%) | Anacostia River | Blue Catfish | FP | 20 | 17.0 | 19.8 | 20.5 | 20.3 | 21.4 | 23.9 | 1.7 | 8.3 |
| HF | 20 | 17.8 | 18.8 | 19.7 | 19.6 | 20.5 | 20.9 | 1.0 | 5.1 | |||
| Potomac River | Largemouth Bass | FP | 20 | 18.7 | 19.8 | 20.5 | 20.4 | 20.9 | 22.0 | 0.9 | 4.5 | |
| HF | 20 | 19.4 | 20.0 | 20.4 | 20.9 | 21.4 | 23.6 | 1.3 | 6.2 | |||
| St. Lawrence River | Smallmouth Bass | FP | 20 | 21.2 | 22.5 | 22.8 | 22.8 | 23.3 | 24.5 | 0.8 | 3.3 | |
| HF | 20 | 21.6 | 22.3 | 22.9 | 22.7 | 23.2 | 24.4 | 0.7 | 3.1 | |||
| Lake Michigan | Lake Trout | FP | 20 | 29.8 | 32.6 | 35.4 | 35.3 | 37.3 | 45.8 | 3.9 | 10.9 | |
| HF | 20 | 32.9 | 34.7 | 37.3 | 36.6 | 38.1 | 41.0 | 2.5 | 6.7 | |||
| Lake Erie | Walleye | FP | 20 | 21.1 | 21.8 | 22.1 | 22.4 | 22.7 | 24.6 | 0.9 | 3.8 | |
| HF | 20 | 21.4 | 22.1 | 22.5 | 22.4 | 22.9 | 23.4 | 0.6 | 2.5 | |||
| Lake Ontario | Chinook Salmon | FP | 20 | 24.8 | 26.9 | 27.5 | 28.3 | 29.7 | 33.3 | 2.7 | 9.4 | |
| HF | 20 | 26.1 | 26.9 | 27.5 | 28.1 | 28.8 | 32.3 | 1.8 | 6.5 | |||
FP, fillet plug sample; HF, homogenized fillet sample; ng/g, nanograms per gram; ww, wet-weight basis; dw, dry-weight basis; SD, standard deviation; RSD, relative standard deviation