The PCAL team went down to EY with PS4 to do an End station measurement.
We mostly followed the procedure , but I did do something that may be of interest.

Beam spot is looking slightly oblong but not too bad. I did not touch up the beam spots.

The martel calibrated voltage source was set to the "mV range" today instead of the usual "V range" while inputing the "zero votage" into the DAQ.
This may present us with a more consistent value of "Zero Voltage". This auxilary analysis is pending.

The normal ES trends analysis is already done and can be found here: https://git.ligo.org/Calibration/pcal/-/tree/master/O4/ES/measurements/LHO_EndY/tD20240813?ref_type=heads

Beam spot after we left still looked a little long.