Operators name: Nakagaki, Yasui

Shift Time: 16-24

Summary:

・VAC, CRY, and TEMP were stable
・IFO was unstable ever since our shift started
・Ushiba-san's work(klog25376, klog25378)
・19:22 OBSERVING
・After that IFO was stable over 3 hours
・22:53 LOCK_LOSS due to an earthquake
・23:48 OBSERVATION(recovered automatically)