| Comparison | Pb | Cd |
| Location 1 vs.2 | 0.57 | 0.52 |
| Location 1 vs.3 | 0.5 | 0.87 |
| Location 1 vs.4 | 0.41 | 0.84 |
| Location 1 vs.5 | 0.02 | 0.01 |
| Location 2 vs.3 | 0.99 | 0.6 |
| Location 2 vs.4 | 0.21 | 0.37 |
| Location 2 vs.5 | 0.14 | 0.04 |
| Location 3 vs.4 | 0.16 | 0.69 |
| Location 3 vs.5 | 0.07 | 0.01 |
| Location 4 vs.5 | 0.01 | 0 |