Spectral region (cm−1) | \({{\text{RMSE}}_{{{\text{CV}}}}} ^{{\text{a}}}\) (N = 125) | RMSETest (N = 56) | \({R^{2} {_{{{\text{CV}}}}}} ^{{\text{b}}}\) (N = 125) | R 2 Test (N = 56) | NFactorsc |
---|---|---|---|---|---|
3100–2800 | 4.50 | 6.70 | 0.78 | 0.73 | 11 |
3100–2800. 1800–700 | 3.97 | 12.74 | 0.83 | 0.15 | 14 |
3100–2800. 1800–1700 | 5.46 | 8.06 | 0.67 | 0.50 | 4 |
3100–2800. 1700–1715 | 4.64 | 5.68 | 0.77 | 0.70 | 12 |
3100–2800. 1800–1715 | 4.41 | 5.70 | 0.79 | 0.69 | 17 |
1800–1700 | 6.91 | 13.28 | 0.51 | 0.02 | 5 |
1800–700 | 5.51 | 11.58 | 0.67 | 0.23 | 5 |