Helpful stuff, thanks

Noon to noon? Good grief, I'm a day sleeper.

I've searched, but I have not found ....

While I'm sure that the answer will be beyond me, I'm curious as to how my device measures my sleep. Its rather stingy, I find, barely granting me 5 hours out of an 8 hour session.

Resmed S9 Elite, full mask, 7cm

many thanks

How to setup used machine so it will be legally compliant with DOT reporting standards? I have an old machine, from before data or sd cards, can't afford new machine. Looking at a Resmed 9.