Table 5.
Descriptive statistics for mercury results by sampling location, species, and sample type
| Site | Species | Sample type | Count | Mercury concentration (ng/g) | RSD (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 25th Percentile | Median | Mean | 75th Percentile | Max | SD | |||||
| Anacostia River | Blue Catfish | FP | 50 | 44.2 | 68.5 | 88.2 | 107.5 | 126.0 | 308.0 | 61.8 | 57.5 |
| HF | 50 | 23.0 | 69.6 | 86.5 | 106.9 | 132.0 | 284.0 | 61.3 | 57.4 | ||
| Potomac River | Largemouth Bass | FP | 50 | 74.0 | 97.4 | 109.0 | 177.4 | 186.0 | 526.0 | 139.0 | 78.4 |
| HF | 50 | 86.8 | 102.0 | 118.0 | 176.8 | 213.0 | 475.0 | 115.7 | 65.4 | ||
| St. Lawrence River | Smallmouth Bass | FP | 50 | 99.6 | 160.0 | 185.5 | 195.6 | 236.0 | 322.0 | 59.8 | 30.5 |
| HF | 50 | 105.0 | 173.0 | 190.0 | 199.7 | 241.0 | 317.0 | 54.6 | 27.3 | ||
| Lake Michigan | Lake Trout | FP | 50 | 81.0 | 92.1 | 131.0 | 129.8 | 157.0 | 211.0 | 39.2 | 30.2 |
| HF | 50 | 95.2 | 104.0 | 155.0 | 148.1 | 183.0 | 222.0 | 42.1 | 28.4 | ||
| Lake Erie | Walleye | FP | 50 | 86.7 | 103.0 | 124.0 | 198.2 | 213.0 | 649.0 | 162.9 | 82.2 |
| HF | 50 | 87.5 | 108.0 | 130.0 | 189.3 | 207.0 | 556.0 | 133.2 | 70.3 | ||
| Lake Ontario | Chinook Salmon | FP | 50 | 106.0 | 115.0 | 119.5 | 122.4 | 130.0 | 143.0 | 10.4 | 8.5 |
| HF | 50 | 119.0 | 139.0 | 149.0 | 147.9 | 155.0 | 172.0 | 12.4 | 8.4 | ||
FP, fillet plug sample; HF, homogenized fillet sample; ng/g, nanograms per gram; SD, standard deviation; RSD, relative standard deviation