Thanks for replying. :)
I have no other charts to show (I have one other night, for a few hours, which is similar to this one), and I honestly can't deal with it anymore. I have tried higher settings, and it does not help. No matter what setting, I do not feel like I am getting enough air. It's very subtle, but my body knows. There are other issues as well, no need to go into. The point is that I maybe, possibly could get used to breathing with this thing after a matter of months, but given that I honestly don't know if I have apnea bad enough that it would help, I can't bring myself to continue putting myself through this hell (which is what it is in some ways).
Re: EPR. I experimented with it being off, as you suggested, and it just doesn't work for me at all. The only way I can tolerate the machine is if the EPR is at 3. And even then, the breathing is difficult and unnatural, and it's like putting a mountain between me and falling asleep. When I wake up, it is virtually impossible for me to go back to sleep with this thing on, which is why I only have a couple nights at a few hours, because after spending an hour in the middle of the night trying to fall asleep again with this horrible thing, I take it off and let myself fall back asleep.
Okay, well, I guess the bottom line is that I still have no real idea whether CPAP would help me with a problem that I'm not even sure is bad enough to warrant it. Thank you for your help, though. It is genuinely appreciated.