Lockloss @ 18:47 UTC - link to lockloss tool
No obvious cause; were only locked for 20 minutes. ETMX started moving very slightly 43ms before the lockloss, but otherwise I don't see anything else suspicious.
H1 back to observing at 20:42 UTC. Automated relock except for I moved PRM to help during DRMI acquisition. One lockloss during TRANSITION_FROM_ETMX, but otherwise uneventful.