Discrimination of Salvia miltiorrhiza Bunge from Different Geographical Locations Employing High-Performance Liquid Chromatography, Near-Infrared Fingerprinting Combined with Chemometrics

Table 6

The average distances of samples within the same class and different class centers.

Samples in different classes	Centers of different classes
	Henan	Shandong	Anhui	Sichuan
Henan	0.9859 ± 0.012	1.8614 ± 0.010	2.4138 ± 0.091	4.0963 ± 0.011
Shandong	1.9862 ± 0.015	0.8769 ± 0.011	2.2174 ± 0.089	4.1573 ± 0.098
Anhui	2.5375 ± 0.021	2.0167 ± 0.093	0.9788 ± 0.010	2.8943 ± 0.012
Sichuan	4.9736 ± 0.009	3.8794 ± 0.012	3.1027 ± 0.014	0.8796 ± 0.025