Parameter | Fitted Model | Nugget (C0) | Sill (C0 + C) | Lag Size (Km) | Range (Km) | ME | RMSE | ASE | MSE | RMSSE |
pH | Spherical | 0.067 | 1.44 | 2711.55 | 32,247.66 | 0.0005 | 0.0175 | 0.0673 | 0.0084 | 0.2587 |
TDS | Circular | 0.000 | 1.11 | 782.83 | 5860.20 | −0.1007 | 96.8730 | 113.8267 | 0.0007 | 0.8388 |
Total Hardness | Gaussian | 0.000 | 1.17 | 588.10 | 6767.17 | 1.1389 | 26.1619 | 41.6183 | 0.0111 | 1.1865 |
Alkalinity | Gaussian | 0.004 | 0.90 | 1291.33 | 8047.39 | −0.0120 | 4.7312 | 4.5745 | −0.0005 | 1.0212 |
Chloride | Spherical | 0.000 | 1.14 | 748.61 | 6367.48 | 0.3697 | 53.3323 | 60.5252 | 0.0059 | 0.8785 |
Nitrate | Exponential | 0.014 | 0.81 | 1463.46 | 5808.93 | −0.0235 | 4.5187 | 5.1932 | −0.0022 | 0.9142 |
Sulfate | Circular | 0.000 | 1.13 | 1223.91 | 14,686.89 | 0.0039 | 10.0084 | 13.1104 | 0.0042 | 0.7479 |
Calcium | Spherical | 0.082 | 1.05 | 811.32 | 6083.68 | 0.6250 | 5.8355 | 15.5445 | 0.0549 | 0.6599 |
Magnesium | Exponential | 0.000 | 0.98 | 654.68 | 5905.52 | 0.1023 | 3.8939 | 5.8448 | 0.0060 | 1.0617 |
Fluoride | Gaussian | 0.020 | 1.28 | 1099.43 | 13,193.19 | −0.0001 | 0.0170 | 0.0372 | −0.0128 | 0.5598 |