Table 3.
Statistical indicators for the quality of the estimated hydraulic properties
| Calibration | Validation | ||||
|---|---|---|---|---|---|
| Initial | Final | Initial | Final | ||
| No plant | Mean error (%) | 2.43 (±0.60) | 3.41 (±1.92) | 3.50 (±1.57) | 8.03 (±3.03) |
| RMSE (cm3) | 0.15 (±0.05) | 0.12 (±0.06) | 0.20 (±0.09) | 0.21 (±0.05) | |
| CD (−) | 1.02 (±0.24) | 0.84 (±0.10) | 1.08 (±0.14) | 0.83 (±0.17) | |
| Mustard | Mean error (%) | 4.27 (±0.85) | 4.79 (±1.52) | 5.57 (±3.77) | 6.92 (±2.05) |
| RMSE (cm3) | 0.29 (±0.09) | 0.17 (±0.06) | 0.39 (±0.29) | 0.19 (±0.03) | |
| CD (−) | 1.29 (±0.34) | 0.76 (±0.07) | 1.50 (±0.36) | 0.81 (±0.08) | |
| Rye | Mean error (%) | 4.21 (±1.79) | 5.43 (±0.57) | 4.79 (±3.39) | 7.44 (±2.29) |
| RMSE (cm3) | 0.18 (±0.01) | 0.19 (±0.04) | 0.31 (±0.22) | 0.22 (±0.07) | |
| CD (−) | 1.01 (±0.03) | 0.75 (±0.03) | 1.41 (±0.34) | 0.71 (±0.08) | |
Calculations are based on the agreement between measured and modelled cumulative outflow for the calibration and validation data sets (RMSE is root mean square error and CD is coefficient of determination with 1 showing optimum fit)