Table 4.
Pearson’s correlation between concentrations of Cu, Zn, Cd and Pb.
| Cu | Zn | Cd | Pb | |
|---|---|---|---|---|
| Cu | 1 | 406 (**) | 370 (**) | 350 (**) |
| Zn | 1 | 682 (**) | 804 (**) | |
| Cd | 1 | 744 (**) | ||
| Pb | 1 |
** Correlation is significant at the 0.01 level (2-tailed).
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