Table 5 PLS calibration and validation parameters for regression models for pH and DP using NIR spectra obtained with the PHAZIR hand-held spectrometer; n-number of samples
PLS model | Calibration | Validation | ||||||
|---|---|---|---|---|---|---|---|---|
n | RMSEC | RMSECV | R 2 | n | RMSEP | Factors | R 2 | |
pH | 52 | 0.37 | 0.45 | 0.70 | 18 | 0.72 | 4 | 0.47 |
DP | 45 | 263 | 298 | 0.60 | 15 | 177 | 3 | 0.78 |