J. Kissel, B. Weaver

Took this week's charge measurements while we were down for other reasons. New plots attached. Looks like the regular bias flipping that we're doing when the given test mass is NOT in use is working well. This was programmed into the ISC_LOCK guardian on ETMX on 2016 Nov 03 (see LHO aLOG 31172), and for ETMY on 2016 Nov 28 (see LHO aLOG 31929).

In the limit of infinite spare time, I'd like to resurrect comparing longitudinal actuation strength change over time with these optical lever angular measures of the strength (see, e.g. LHO aLOG 24241), now that we've got calibration lines regularly churning out data again during the observing run.