Table 2: PLS results for ethyl ester content calibration and prediction.

Model M1 M2 M3 M4 M5 M6
N 25 21 20 16 11 5
LV 4 4 4 5 2 3
RMSEC (%) 2.83 2.01 2.94 1.30 1.60 2.05
RMSECV (%) 5.39 4.04 6.10 4.47 2.21 -
R2 0.9916 0.9959 0.9952 0.9966 0.9931 0.9971
RMSEP (%) R6 4.59 4.63 4.82 4.44 2.41 8.13
RMSEP (%) R9 1.55 1.53 1.90 2.04 11.59 2.86
RMSEP (%) R6+R9 3.12 3.13 3.36 3.21 9.16 5.55

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