To mirror Anamaria's findings in LLOalog69020 on the quad vertical motion changing over the last 150 days, I've trended the same channels with the addition of the outside air temperature. I did this in ndscope, so the plots aren't overlapped and offset like Anamarias. Definitely not as good looking but much faster for me. It also seems that some of our CS on chamber temperature sensors seem to be intermittently working.

This tells the same story that we (re?)found back in November/December (alog74575, alog74533) that the outside air temperature is affecting the sag of our suspensions more than we're accounting for with any control, offsets, or HVAC settings. During that time when we couldn't lock, we tried adding some vertical offsets to the BS, and ITMs but ended up reverting all of that and just realigned PR3 to a good point and then adjusted the COMM beatnote on table for this better corner alignment. How to handle these large vertical motions was never really solved.