snr_db,n_frames,keying,recovery
0,1,fixed,0.425
0,2,fixed,0.46
0,4,fixed,0.645
10,1,fixed,0.905
10,2,fixed,0.95
10,4,fixed,0.99
20,1,fixed,0.985
20,2,fixed,1
20,4,fixed,1
10,2,refreshed,0