Evaluation index

Principal component

Evaluation index

Principal component

1

2

3

4

1

2

3

4

X1

0.782

0.597

0.167

−0.033

X12

0.339

0.771

0.446

−0.184

X2

0.073

0.985

−0.079

0.054

X13

0.742

0.613

−0.232

−0.115

X3

0.639

0.561

0.264

−0.174

X14

0.116

0.01

0.948

0.17

X4

0.799

0.387

−0.169

−0.29

X15

0.454

0.748

0.214

−0.034

X5

0.808

0.511

0.249

−0.053

X16

0.213

0.068

0.953

0.135

X6

0.232

0.938

−0.056

0.167

X17

0.191

0.245

0.925

−0.193

X7

−0.015

0.877

0.254

−0.341

X18

0.71

0.613

−0.258

−0.007

X8

−0.027

0.873

0.382

0.244

X19

0.748

0.613

−0.187

0.008

X9

0.823

0.463

0.267

0.128

X20

−0.188

−0.622

−0.269

0.632

X10

0.465

0.749

0.464

−0.041

X21

−0.091

0.258

0.448

0.824

X11

0.38

0.727

0.567

−0.028