snr psuccess 100000 trials, ntotal<76, nhard<44
-27.0 0.0
-26.5 0.007
-26.0 0.04
-25.5 0.2
-25.0 0.41
-24.5 0.75
-24.0 0.93700
-23.5 0.99000
-23.0 0.99954