| n | Intercept | Coefficient | t-value | p-value | Adj. R2 | RMSE | MAE | ||
Estimate | SE | Estimate | SE | |||||||
All depths | 380 | 0.010 | 0.051 | 1.040 | 0.044 | 23.13 | <0.001 | 0.58 | 0.34 | 0.27 |
15 cm | 119 | 0.039 | 0.083 | 1.047 | 0.092 | 11.358 | <0.001 | 0.52 | 0.29 | 0.24 |
30 cm | 114 | −0.057 | 0.093 | 1.047 | 0.075 | 13.921 | <0.001 | 0.63 | 0.34 | 0.28 |
45 cm | 90 | −0.206 | 0.124 | 1.254 | 0.098 | 12.751 | <0.001 | 0.64 | 0.35 | 0.28 |
60 cm | 58 | 0.528 | 0.187 | 0.5610 | 0.163 | 3.451 | 0.001 | 0.16 | 0.32 | 0.27 |
SM | 167 | 0.232 | 0.068 | 0.772 | 0.072 | 10.722 | <0.001 | 0.41 | 0.27 | 0.23 |
OP | 145 | −0.472 | 0.133 | 1.506 | 0.118 | 12.758 | <0.001 | 0.53 | 0.35 | 0.27 |
UNB | 69 | 0.010 | 0.135 | 1.022 | 0.088 | 11.588 | <0.001 | 0.66 | 0.38 | 0.31 |