num_observation,sbibm.c2st 1,0.6462500095367432 2,0.5891000032424927 3,0.5722500085830688 4,0.604449987411499 5,0.6397500038146973 6,0.5623499751091003 7,0.6247000098228455 8,0.6075000166893005 9,0.5690000057220459 10,0.6249499917030334