Table 4.

Results of Absorbance-Transmittance Excitation Emission Matrix Model for Total Cannabidiol and Total Tetrahydrocannabinol Quantification with Gas Chromatography-Flame Ionization Reference Data

XGB fit	CBD	THC	n
Calibration	1.000000	0.99811	517
Cross-validation	0.997978	0.99904	517
Prediction	0.991433	0.996602	59

Coefficients of determination (R²) for the XGB regression for total CBD and total THC measured by GC-FID for calibration, cross-validation, and prediction (validation) data. High values (>0.99) for all indicate the model is working well for the prediction of these components.

FID, flame ionization; XGB, extreme gradient boost.