num_observation,sbibm.c2st 1,0.6517500281333923 2,0.607450008392334 3,0.5680000185966492 4,0.614799976348877 5,0.6908000111579895 6,0.5710999965667725 7,0.6367499828338623 8,0.6248499751091003 9,0.5795000195503235 10,0.637499988079071