Table 6.

Results of Absorbance-Transmittance Excitation Emission Matrix Model for Cannabidiol, Cannabidiol Acid, Tetrahydrocannabinol, and Tetrahydrocannabinol Acid Quantification with High-Performance Liquid Chromatography Reference Data

XGB fit	Calibration	Cross-validation	Prediction
CBD	0.992538	0.993634	0.981454
CBDA	0.990559	0.99237	0.996454
THC	0.998983	0.989893	0.993457
THCA	0.998296	0.999509	0.995188

Coefficients of determination (R²) for the XGB regression for calibration and cross-validation (n=517) and prediction (validation) (n=59). High values (>0.98) for all indicate the model is working well for the prediction of these components.