The data file has Vx and Vy, Bx and By in the proper columns. The calibration file is 'T:\MagData\LCLS-II\Hall probe\SENTRON_441\HPCS_001\hpcs_calib.dat'. The calibration is applied to Vx, the data in the Vx column of the data file. The Vy calibration is just 2 T = 10 V. ZW 5/23/19