size,colors,gray_stddev,status
16,182,0.135534,ok
20,247,0.142914,ok
24,325,0.157326,ok
29,436,0.156951,ok
32,504,0.164219,ok
40,691,0.173161,ok
48,868,0.179509,ok
64,1287,0.190366,ok
80,1701,0.198425,ok
128,3115,0.210773,ok
256,6728,0.212284,ok