Multivariate Statistical Analysis Uncovers Spectrum–Effect Relationship between HPLC Fingerprints and Antioxidant Activity of Saffron

Table 3

Eigenvalue and variance cumulative contribution rate.

Principal component	Eigenvalue λ	Variance contribution rate (%)	Cumulative variance contribute rate (%)
1	6.231	47.932	47.932
2	2.330	17.924	65.856
3	1.516	11.659	77.515
4	0.979	7.534	85.049
5	0.822	6.321	91.369
6	0.550	4.228	95.597
7	0.243	1.872	97.469
8	0.158	1.212	98.681
9	0.095	0.729	99.410
10	0.057	0.441	99.851
11	0.010	0.074	99.925
12	0.007	0.052	99.977
13	0.003	0.023	100.000