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Factor analysis results of PRD for minor elements detected at more than half of the sample sites. Only elements with factor loadings >0.40 are listed.
| Variable | Factor 1 | Factor 2 | Factor 3 | Factor 4 |
|---|---|---|---|---|
| V | 0.84 | |||
| Cr | 0.72 | 0.44 | ||
| Co | ||||
| Cu | 0.63 | |||
| Zn | 0.87 | |||
| Sn | 0.71 | |||
| Pb | 0.76 | |||
| Eigenvalue | 1.80 | 1.16 | 0.85 | 0.76 |
| Cumulative Variance | 35.87% | 59.06% | 76.09% | 91.27% |
