Ops Day Summary: 16:00-23:59UTC, 08:00-16:00PT

State of H1: locked in Observe, range is 77Mpc

On site: Darkhan (fellow), JeffK, Gerardo, Sudarshan, Thomas Vo, Kiwamu (just arrived), and JeffB (incoming Ops, just arrived)

Shift Details:

• H1 has been locked 40 hours 3 minutes
• one unintentional break in Observe occured from 19:03-1925UTC (see earlier alog for details)
• during the break in Observe, there is about 15 minutes of "unofficial undisturbed" time (see same earlier alog for details)
• PSL diode chiller filled
• CP3 filled manually by Gerardo
• Gerardo on site and driving off and on starting from 23:04:36UTC and ending by 00:00UTC (more details in his alog)
• ETMY saturations, 15 total during my shift
• Gamma Ray Burst at 22:47:43UTC

Maintenance Tasks Tomorrow:

• one LN2 delivery slated for maintenance tomorrow; CP3 at MY
• weekly GraceDB heartbeats at ~9:00am and ~9:05am, for SNs and GWs, respectively
• PSL watchdog reset