While some calibration work was ongoing, I turned off the HAM1 -> CHARD feedforward, so that Elenna / Gabriele can potentially retrain the filters to make further improvements now that Jim has installed new HAM1 seismic feedforward filters (alog 72393).

The switch H1:HPI-HAM1_TTL4C_FF_OUTSW was off from 23 Aug 2023 22:03:47 UTC to 22:55:20 UTC.