num_observation,sbibm.c2st 1,0.6112499833106995 2,0.6334999799728394 3,0.6045500040054321 4,0.6284000277519226 5,0.7798500061035156 6,0.5839999914169312 7,0.6428999900817871 8,0.6461499929428101 9,0.5873000025749207 10,0.6918500065803528