Characteristic Flavor Substances of Guizhou Black Tea and the Environmental Factors Influencing Their Formation Using Stable Isotopes and Headspace Gas Chromatography-Ion Mobility Spectrometry

Table 4

Partial least squares regression models of and .

Model	Model establishment			Model results
	Variable number	Sample number for training dataset	Sample number for test dataset		RMSE	RPD
	8	16	2	0.16	0.90	1.06
	8	16	2	0.62	0.65	1.06