hits probability (poisson distribution)
0 0.0045400%
1 0.0453999%
2 0.2269996%
3 0.7566655%
4 1.8916637%
5 3.7833275%
6 6.3055458%
7 9.0079226%
8 11.2599032%
9 12.5110036%
10 12.5110036%
11 11.3736396%
12 9.4780330%
13 7.2907946%
14 5.2077104%
15 3.4718070%
16 2.1698794%
17 1.2763996%
18 0.7091109%
19 0.3732163%
20 0.1866081%
···
20 0.1588261%