Finished with the OPLEV charge measurements for ETMX (only 3 measurements done) and ETMY (all 5 measurements) today during the the maintenance downtime, the plots are attached below. The effective bias voltage for both ETMX and ETMY are within +-40V (except for  ETMY yaw which is slowly inching towards 50 volts, will keep an eye on that in future). The long term trend looks fine.

For the ETMX we were short on time and hence could only perform 3 measurements, as Jeff Kissel had to work on the rearrangement of QUAD L2 DRIVEALIGN matrices. 

All the slider values were restored and SDF differences removed after the measurements were completed.