Operators name: N.Sato, N.Tanaka

Shift time: 16-24 (JST)
Summary:
Check Items:
VAC,CRY,TEMP There was no problem.

16:00 OBSERVING before 36min(15:23 IPC glitches re-alignment by previous operators.).→1h17m

16:40 Lock loss(Automatic recovery).
　　　Corresponding earthquake is unknown.
17:01 OBSERVING
17:06 Lock loss due to earthquake(?) immediately after
Corresponding earthquake is unknown.
18:12 OBSERVING(down several times and come back.)
19:38 Lock loss(Earthquake occurred during recovery.)
19:53 OBSERVING
24:00 OBSERVING