frac,ser_mask
0,0.9999529167
0.2,0.99770125
0.4,0.9489816667
0.6,0.6733195833
0.75,0.29680625
0.85,0.1140279167
0.9,0.08714708333
0.92,0.07980791667
0.94,0.07278666667
0.955,0.06856208333
0.97,0.06626333333
0.985,0.06358166667
1,0.06154625