| γ | σ | Calibration set | Validation set | ||
R | RMSE | R | RMSE | |||
Raw spectra | 87.51 | 28.16 | 0.946 | 3.746 | 0.913 | 4.048 |
1st-d’SG | 89.34 | 32.45 | 0.951 | 3.282 | 0.927 | 3.841 |