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Distribution of elements among the different factors inferred from the PMF model.
| Parameters | Factor 1 | Factor 2 |
|---|---|---|
| pH | 31.4 | 68.6 |
| EC | 54.8 | 45.2 |
| TDS | 56.2 | 43.8 |
| DO | 34.8 | 65.2 |
| Salinity | 54.5 | 45.5 |
| Alkalinity | 26.9 | 73.1 |
| HCO3− | 27.0 | 73.0 |
| Ca2+ | 62.5 | 37.5 |
| Mg2+ | 85.8 | 14.2 |
| Na+ | 87.7 | 12.3 |
| K+ | 16.9 | 83.1 |
| Mn | 84.0 | 16.0 |
| Cu | 18.7 | 81.3 |
| Zn | 25.7 | 74.3 |
| As | 7.7 | 92.3 |
| Fe | 38.5 | 61.5 |
| Cl− | 41.1 | 58.9 |
