I'll measure the transfer function later, but for now, the OVERFLOW of the Type-A was due to a seismometer on the ground, not a sensor on the suspension, and the OVERFLOW of the other suspensions was due to OPLEV.

The Guardian of the suspensions at the time of the earthquake, all suspensions were in SAFE condition, except for the three IMC suspensions. In other words, they were subjected to the shaking caused by the earthquake without specifying any controls. One night after the earthquake yesterday, the screenshot of the VIS_OVERVIEW, shown in the attached image 1, shows that some of the suspensions were OVERFLOWING; in the case of Type-A, the seismometer on the second floor were OVERFLOW, and in the case of Type-Bp and C I assume that the passive vibration isolation of the IP suppressed the shaking of the mirror.