Now that Sheila and Jennie have done lots of work to get our arm pointing and A2L couplings improved, there may be a small amount of jitter cleaning improvement that can be gained.

In the attached image, red and blue are from today after the commissioning time.  Green and brown are from a week ago when we had ~165 Mpc cleaned range.  Red and Green are pre-cleaning, and Blue and Brown are after line subtraction and cleaning. In the area between 100-200 Hz, it looks like the blue current trace is perhaps not quite as flat as the brown trace, so maybe there is a teeny bit more that an updated cleaning coefficient set could eeek out.  Once the cleaned trace is flat, if there is an overall level change, that probably wouldn't be able to be cleaned out.

I'll try to look at some Observing time from tonight, to see if there is an improved candidate set of coefficients we can try.  As a reminder, the jitter coupling is still quite close to what it was in O4a, and the cleaning coefficients are currently the same as they have been since Fall 2023.