The display with the serial number also has a SW number and a cx number. Does anyone know what these identify?

I have a time stamp usage report that appears as a graph with one column being the “on” time, and the other column being the “off” time.

I have learned the Aircurve 10st is not capable of reporting when the power is turned on and off, so is it safe to say this is regarding the mask?

This time stamp usage report shows on and off times that are supposed to represent the power being turned on and off. However, the AirCurve 10st dies not record on and off times, so the only explanation I can find is that thisbreflect the mask on/off times. Is this correct?