TABLE I.

Eigenvalues distribution (EGF).

Component	Eigenvalue	Explained variance (%)	Cumulative variance (%)
PC1	17.767	98.71	98.71
PC2	0.073	0.41	99.12
PC3	0.046	0.26	99.38
PC4	0.027	0.15	99.51
PC5	0.017	0.10	99.60