It seems that the ETMX oplev calibration has been off by a factor of 2.3 with the oplev values smaller than that expected from the alignment biases. I have corrected the calibration of yaw, but not pitch yet. I will do the calibration of pitch tomorrow.

The attached is a plot of the oplev signal in yaw as a function of the alighnment bias before the correction. According to a least square fitting, the oplev was underestimating the angle by a factor of 1/0.436 ~ 2.3. I corrected this by multipling the same factor to the oplev pitch gain so that the gain is now 81.2 /0.436 = 186.2 urad/cnts.