I centered optical levers of ITMX,BS,ETMY. I also change the position of optical levers of ITMX, ETMY, ITMY, BS on Friday night(9/21), of ITMX, ETMY, BS on Monday night. Both are around 6:00 ~ 7:00.But centering on Monday was totally wrong, because I centered with not good IFO alignment.
The attachment is the 5 days trend of the opt lev of ITMX. First gap is alignment on Friday and Second gap is the alignment on Monday. Now I centered after locking the FPMI.
The attachment 2 is the last 6 hours data. The gap on 9/25 00:00 and 1:30(UTC) is because the alignment of the cavity and the last gap is because of centering of the optical lever.