Number

Eigenvalues

Contribution rate/(%)

Cumulative rate/(%)

1

4.0310

50.388

50.388

2

2.1150

26.437

76.825

3

1.8098

22.623

99.448

4

0.0317

0.396

99.844

5

0.0079

0.099

99.943

6

0.0029

0.036

99.979

7

0.0012

0.015

99.994

8

0.0005

0.006

100