Yesterday, we replaced the coil driver at ETMX, ITMX, and ITMY.
So, we should do actuator balancing again.

I did it for ETMX and final results are in attached figure.
Since OpLev cannnot see any signal when I excited the TM stage, TM actuator balancing was not finishd.
If we would like to use it for ASC, we should do it later with interferometer.