Out of observing times: 1500-1501, 1531-1540 UTC

The TCSX laser had to relock two times in the past half hour. The first time was because it ran out of PZT range (#1 on the screenshot), not uncommon and something that happens from time to time. ~20 minutes after it relocked the chiller temperature got a bit warmer for an unknown reason (#2 & #3). This caused it to unlock and then relock again, this last time everything seems stable (#4).

Out of paranoia I when to check on the chillers and didn't notice anything odd - water levels ok, filters ok, no leaking water/coolant, no critters making nests inside that I could see.