In the case of left arm gas-cer, we can see that the threshold of the histogram is moving while changing threshold in the module.
Fig3 is for RHRS gas-cerenkov threshold scan plot and Fig4 is its zoomed in version.
For right arm, we do not see clearly the movement of the histogram
threshold with the change of module's threshold. It is either not working
or the threshold above about 75 mV is the maximum amount that the
discriminator can take which I dought. It should be something else.