| Variables | pH | T˚C | CE | HCO3 | Cl | NO3 | PO4 | SO4 | Na | NH4 | K | Mg | Ca |
| pH | 1 | ||||||||||||
| T˚C | −0.34 | 1 | |||||||||||
| CE | 0.02 | −0.25 | 1 | ||||||||||
| HCO3 | 0.32 | −0.29 | 0.44 | 1 | |||||||||
| Cl | −0.07 | −0.23 | 0.96 | 0.36 | 1 | ||||||||
| NO3 | 0.33 | −0.24 | 0.68 | 0.25 | 0.52 | 1 | |||||||
| PO4 | −0.01 | 0.08 | 0.04 | −0.02 | 0.01 | −0.06 | 1 | ||||||
| SO4 | 0.28 | −0.28 | 0.55 | 0.27 | 0.54 | 0.42 | 0.07 | 1 | |||||
| Na | −0.04 | −0.22 | 0.93 | 0.42 | 0.95 | 0.49 | 0.01 | 0.61 | 1 | ||||
| NH4 | −0.16 | −0.10 | 0.24 | 0.04 | 0.30 | 0.02 | −0.02 | 0.05 | 0.12 | 1 | |||
| K | 0.25 | −0.25 | 0.81 | 0.50 | 0.72 | 0.73 | −0.04 | 0.56 | 0.72 | 0.21 | 1 | ||
| Mg | 0.16 | −0.27 | 0.63 | 0.52 | 0.50 | 0.71 | 0.03 | 0.17 | 0.40 | 0.07 | 0.47 | 1 | |
| Ca | 0.41 | −0.35 | 0.74 | 0.78 | 0.66 | 0.71 | −0.04 | 0.49 | 0.63 | 0.05 | 0.74 | 0.76 | 1 |