snr  psuccess  ntrials 100, r6321, r6333
-26.0 0.003   0.003
-25.5 0.033   0.037
-25.0 0.113   0.113
-24.5 0.315   0.330
-24.0 0.635   0.670
-23.5 0.908   0.903
-23.0 0.977   0.984
-22.5 0.9986  0.999
-22.0 1.0     1.0