| 指标 | K+ + Na+ | Ca2+ | Mg2+ | Cl− | SO2− 4 | HCO− 3 |
| K++Na+ | 1.000 | −0.078 | −0.158 | 0.295 | 0.051 | 0.042 |
| Ca2+ | −0.078 | 1.000 | 0.611 | 0.565 | 0.885 | −0.689 |
| Mg2+ | −0.158 | 0.611 | 1.000 | 0.626 | 0.615 | −0.730 |
| Cl− | 0.295 | 0.565 | 0.626 | 1.000 | 0.530 | −0.910 |
| SO2− 4 | 0.051 | 0.885 | 0.615 | 0.530 | 1.000 | −0.675 |
| HCO− 3 | 0.042 | −0.689 | −0.730 | −0.910 | −0.675 | 1.000 |