Leonid.Prokhorov, Jeffrey.Kissel

We repeated the charge measurements on both ETMX and ETMY. Results are close to yesterday's one. Plots of all measured data after discharging are attached.

In the morning we found both ESD drivers off and reset it (see alog 19341).

Today we have the scattering of data points for ETMY lower than yesterday with unknown reason. 
We presumed that it may be due to the optical levers centering and check the alighnment at last 3 days. 
for ETMY: Alignment was not very good today 0..-6(pitch) and -1..-2.5 (yaw), while there is the minimal scattering. The better alignment was at June, 24: -0.5..0.2 (pitch) and 0..0.3(yaw), when we have larger scattering.
for ETMX: Scattering seems more or less the same for all days, while OPLEV centering is really different (+6(pitch) and -10(yaw) at June, 24; -1(pitch) and 0..-0.2(yaw) at June, 25; 0.5..2(pitch) and -0.4..0.2(yaw) at June, 26)
So it seems like there is no correlation between alignment of optical levers and scattering of measured charge.

Sign of the pitch and yaw response on excitation with different bias voltage for ETMY was the same as in yesterday measurements, see plot.