#Tube A06 #CS-137 7 cm from middle of tube # V, dV , T(min) , C , CPM , dCPM 500, 1, 1, 0, 0, 0 460, 1, 1, 0, 0, 0 500, 1, 1, 0, 0, 0 562.5, 1, 1, 368, 0, 0 580, 2, 1, 448, 0, 0 601, .5, 1, 586, 0, 0 601, .3, 1, 599, 0, 0