% Data from Keafer, divisions/day-1
2.5	0.18
4.0	0.20
5.4	0.31
6.8	0.35
8.1	0.41
9.3	0.46
10.5	0.49
11.8	0.54
13.0	0.57
14.1	0.72
15.1	0.77
16.4	0.77
17.5	0.84
18.5	0.85
19.6	0.86
20.6	0.81
21.5	0.72
22.6	0.45