Operators name: M.Aoumi, M.Tamaki

Shift time: 00-08 (JST)
Summary:
Check Items:,CRY,TEMP → There was no problem.
                     Vacuum monitor proble => same as klog25516.
02:27 Lock loss(Automatic recovery).
　　　Corresponding earthquake is unknown.
02:37 OBSERVING
08:00 OBSERVING