As Yokozawa-san pointed in klog33232 and the control room members already recognized, recently the IPC glitches occurring frequently.
- 3/21 n=6
- 3/22 n=0
- 3/23 n=2
- 3/24 n=90
- 3/25 n=74
- 3/26~27 n=0
- 3/28 n=50
- 3/29 n=92
- 3/30~31 n=0
- 4/1 n=99
- 4/2 n=66
- 4/3 n=39
During O4a, we also saw many IPC glitches around noon and they concentrated in specific one hour. But, the recent IPC glitches occurred not in specific one hour and occurred in broad time. Roughly speaking the frequency is once per 20 minutes or shorter than 20 minutes. I attach the list of occurance times in JST. I didn't find the characteristic features in this list.
