Thank you for the replies, I guess I don't have to worry about it too much.

I'm new to CPAP and Sleepyhead. I've looked through the Sleepyhead help pages but did not find anything to explain my BND value. http://i.imgur.com/IfKA7Hc.png I use a full-face mask with Resmed 60 APAP w/ AFlex & humidifier. This is my second attempt with CPAP and my second night in a row. I was di...