matr. bow
% IAS Frames
0% 12
8% 11
22% 10
42% 9
75% 8
142% 7

IAS on bows (zons basin info)
15/4: 0 to 4
14/4: 5 to 10
13/3: 11 to 21
12/3: 22 to 34
11/3: 35 to 55
10/3: 56 to 88
9/3: 89 to 119
9/2: 120 to 146
8/2: 147 to 285