Table 4.

Eigenvectors of the four maximum eigenvalues of the four maximum eigenvalues of correlation coefficient matrix.

Variable	Compounds	Eigenvectorsa
		Prin1	Prin2	Prin3	Prin4
X1	Gallic acid	−0.316845	0.289978	0.449243	0.037814
X2	Methyl gallate	−0.220481	0.415437	0.393227	0.264968
X3	Luteolin	0.242207	0.335556	−0.383323	0.477753
X4	Quercetin	0.293373	−0.270439	0.476144	0.178633
X5	Myricetin	0.277019	−0.293677	0.453918	0.327893
X6	ECG	0.439049	−0.101339	−0.098127	0.088916
X7	Astragalin	0.331443	0.319937	0.159990	−0.504100
X8	Quercitrin	0.211694	0.487103	0.124810	−0.223715
X9	EGCG	0.275319	0.348452	−0.072616	0.413034
X10	Myricetrin	0.454195	0.005049	0.088239	−0.279324

^aThe result indicates that myricetrin and ECG account for prin 1, quercitrin and methyl gallate account for prin 2, while quercetin, myricetin and gallic acid account for prin 3.