Functionality Investigation of SUS Aux Channels/Monitors

I've been asked to investigate the proper (or not so proper) operation of the SUS AUX /  monitor channels. It appears that, in particular, the L1 stage of ETMY has some questionable counts in the NOISEMON (all 4), the FASTIMON (LR) and the VOLTMON (UL).  I've done an excitation of 4Hz with an amplitude of 10 cts on all stages (Pitch) of ETMY and taken measurements. Below are the results.