Table 3.

Regression diagnostics for the PLS2 model based on four PCs.

Analyte	Slope		Offset		R2		RMSEC	RMSEP
	Calibration	Prediction	Calibration	Prediction	Calibration	Prediction
Acetic Acid	0.9911	0.9872	0.0036	0.0051	0.9911	0.9899	0.1216	0.1286
Acetone	0.9798	0.9864	0.0127	0.0077	0.9798	0.9773	0.2568	0.2711
1,4-Dioxane	0.9933	0.9877	0.0045	0.0066	0.9933	0.9922	0.1494	0.1615
Vinyl Acetate	0.9984	1.0024	0.0012	−0.0012	0.9984	0.9982	0.0834	0.0905