DriptaB, TonyS, RickS

Details regarding the Pcal calibraiton for H1 for the O4 observing run can be fournd in the Pcal review document, LIGO-G2300471.

We expect that the numbers for the calibration of the Pcal Rx sensor signal channels will change by as much as a few tenths of a percent by the start of O4 as we apply the calibrations from the TSA and TSB trasfer standards currently in transit to LHO from NIST.

The Pcal calibration uncertainty for both end stations, 0.28 % (1-sigma), will likely change slightly as well.

We will also post the final numbers to the aLog before the start of O4.

We should have at least preliminary numbers for L1 by early next week.