Taking advatage of the the DAQ I playbacked the data and check the oplev signal during a 4.9 Earthquak occured in Chiba prefecture, last saturday.

https://earthquaketrack.com/quakes/2019-05-31-22-58-08-utc-4-9-20

The EQ is cleary seen by all the sensors. Some dof ( in paricular  PR and END pitch) didn't go back to the original position.

The data on DAQ are referred to UTC but the time of standalone PC is not well sincronized (about 3 min ahead the correct one).