P1

P2

P3

P4

P1

1.0000

0.3346

0.3394

0.3243

P2

2.9889

1.0000

0.5208

0.5367

P3

2.9467

1.9201

1.0000

0.3983

P4

3.0833

1.8633

2.5106

1.0000

各列求和

10.0189

5.1180

4.3708

2.2593