I have not-monitored 2 channels in the OMC SDF Observe.snap file.  These are 2 channels that are written by guardian, and will be different every lock.

The channels are: H1:OMC-PZT2_OFFSET (scanned around to find OMC resonance) and H1:OMC-READOUT_X0_OFFSET (sets the DARM offset to keep OMC DCPDs at 20mA, no matter the PSL power).