Operators name: Nakagaki, Yasui
Shift time: 00-08(JST)
Summary:
・VAC, CRY, and TEMP were no problem.
・IFO was also no problem.

0:00 OBSERVATION from the previous shift time
2:55 LOCK LOSS (At 2:55, 2:57 earthquake occurred twice in Hida region.)
3:10 OBSERVATION (recovered automatically)
7:49 LOCK LOSS (we couldn't find earthquake information around this time.)
8:00 OBSERVATION (recovered automatically)