Attached is a trend of cavity length drift from the yesterday.

The first lock stretch is a 3-hours one that I mentioned in https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=3517. The second lock stretch lasted until this morning.

CH2 is the output of the ETMY M0 lock filter. Using 0.48nm/ct calibration, it seems as if the length drift for both of the stretches was about 110 um. You should be able to stitch these two together, so it is something like 220 um over 16 hours period. This could be tidal.

I don't know if our tidal prediction software still works, wiki page says it doesn't work on Linux workstations.

CH3 and CH4 are the output of ETMY oplev. I think these were calibrated by Thomas, but I couldn't find any alog about that, so for now it is uncalibrated.

CH5 is the reflected power which mimics the transmitted power.