$B_1$

$C_{11}$

$C_{12}$

$C_{13}$

$C_{14}$

$C_{15}$

权数

$C_{11}$

1

3

1/5

3

1/3

0.1230

$C_{12}$

1/3

1

1/7

1

1/5

0.0537

$C_{13}$

5

7

1

7

3

0.5101

$C_{14}$

1/3

1

1/7

1

1/5

0.0537

$C_{15}$

3

5

1/3

5

1

0.2594