I have attached 2 plots:

LHO_ISI_ITMY_Calibration_Check_Stage_1_Sensors_201208022.fig shows the calibrated transfer function from the Y drive to CPS, L4C and T240 on ITMY. Calibration is OK. LHO_ISI_ITMY_Calibration_Check_Super_Sensor_201208022.fig shows the contribution of each sensor in the stage 1 250mHz blend in the Y direction. The calibrated TFs are slightly different in the 2 figures due to the introduction of the calibration correction gain to improve the blend  (amplitude - phase).