One interesting note, roughly 4 days ago (these trends were taken on Monday, this comment posted on Tuesday) the LVEA temperature as measured by the PSL temperature sensor on the outside of the PSL enclosure (H1:PSL-ENV_LVEA_TEMP_DEGF on the Weekly Env plot) dropped from ~69 °F to ~67.5 °F (moving between 67 °F and 68 °F).  This appears to be a real temperature drop as it can be seen in a multitude of PSL sensors: Table North and South and AC North and South in the PSL Laser Room, in the PSL Anteroom, the Amp/DB cooling water, the amplifier and diode box temperatures, the LVEA control box, and in the output power from the 1st and 2nd amplifiers.  No info in the alog re: HVAC work from last Friday (5/26), but this could coincide with Ryan's Saturday alog trending 5 days of LVEA temperatures (note the drop shortly after -1 day) and some Saturday morning messages in the LHO Remote Control Room on Mattermost (discusing CS z-axis motion improvement and temperature variations from Friday, 5/26).