Operators name: Aoumi, K. Tanaka
Shift time: 16-24 (JST)

Summary:

Check Items:
VAC, CRY, TEMP were no any problems except for the MCRACK thermometer.

At 17:13, the value of the MCRACK thermometer suddenly dropped from about 20 degrees to 0 and returned to the original value 10 minutes later (fig. 1).

16:00 OBSERVING from previous shift time

21:52 Lock loss due to earthquake at New Guinea, M 5.4

22:33 Restore OBSERVING state automatically
24:00 keep OBSERVING state