$\tau$

n/p = 4

n/p = 5

n/p = 6

n/p = 7

n/p = 8

0.2

0.65

0

0

0

0

0.4

0.70

0

0

0

0

0.5

1

1

1

1

1

0.6

1

0.92

0.82

0.24

0.20

0.8

1

1

1

0.84

0.29

0.9

1

0.91

0.92

0.65

0.20