We repeated Evan's old CARM pole measurement via Input RIN to Arm RIN at the time of an intensity noise injection at '11 April 2019 22:09:03 UTC'

CARM pole = 0.66 +-0.02 Hz

I fit only to points with coherence > 0.9.  We didn't have great coherence for Arm RIN/Input RIN during this intensity injection, but it was enough to get an idea of the CARM pole.  
We will run stronger intensity noise injections in the near future, at that time we can rerun this script which lives at /ligo/home/craig.cahillane/Git/IFO/FrequencyNoise/scripts/CARMpoleMeasurement.py.