Element (mg/kg) | n | Mean | Median | SD | Variance |
Pb | 15 | 229.75 | 213.5 | 64 | 4074 |
Cd | 15 | 1.2 | 0.82 | 0.654 | 0.427 |
Zn | 15 | 259.5 | 186 | 141 | 19,905 |