Table 4.

Characteristic analysis of correlation matrix.

Eigenvalues	4.7859	0.7014	0.2889	0.1108	0.0667	0.0462
Ratio	0.798	0.117	0.048	0.018	0.011	0.008
Accumulation	0.798	0.915	0.963	0.981	0.992	1