I don't know the procedure how to post SleepyHead charts, others might chime in with the instructions
As for the missing hours, do you have "SmartStart" set to "ON"
If ON, the machine start automatically when you breathe into the mask and stop when remove the mask
OFF ... you'll need to press the on/off button
I press the on/off button :-). Really. It was on; the circle graphic went up to 6 and didn't move. I couldn't sleep because it felt fairly airless. (It would have been totally airless if I failed to press the on button. )
It says I slept for 8 hours but no data for 3 of them.
It appears that a memory chip failed. So long as I alternated the settings between the regular Airfit algorithm and Airfit for Her algorithm, my settings would work. Whenever I stopped the machine (like to go to the bathroom) it wouldn't go up past the minimum setting. I would have to go back into settings and select the other algorithm.
I'm sure I'm not explaining this very well. Bottom line: the DME swapped it out for a new one and explained to me that it was impossible for it to fail the way I described -- but he doesn't know how to test it. ;-)
"The obscure we see eventually. The completely apparent takes a little longer." Edward R. Morrow