I estimated and updated the parameters related DARM (Fig.1).
There is no strange variations (Fig2).

 H_etmxtm = 3.839154366e-14 at 10Hz (0.23% from previous measurements)
 H_etmxim  = 1.535938431e-14 at 10Hz (-1.9% from previous measurements)
 Optical_gain = 2.129473235e12 (0.07% from previous measurements)
 Cavity_pole = 18.127587391 Hz (-0.76% from previous measurements)

Previous parameters are listed in klog#34393.

I investigated the variation in optical gain (specifically, the gain of the sensing function) between 0602 full calibration (klog#34033) and 0630 full calibration (Fig.3).
A decreasing trend was observed from the measurement date (June 2) toward June 20, followed by an increase thereafter.
Since a continuous change can be observed on this time scale (although further data accumulation is needed),
there is a possibility that calibration lines could not only account for statistical fluctuations, but also help suppress systematic errors by correcting for actual variations.