Comparative Study of the Flavonoid Content in Radix Scutellaria from Different Cultivation Areas in China

Table 6

Results of PCA of flavonoids.

Component	Initial eigenvalue			Extraction sum of squared loading
	Sum	Variance (%)	Cumulative (%)	Sum	Variance (%)	Cumulative (%)
X1	3.574	71.477	71.477	3.574	71.477	71.477
X2	1.078	21.552	93.028	1.078	21.552	93.028
X3	0.323	6.453	99.482
X4	0.019	0.375	99.857
X5	0.007	0.143	100