Sorry I didn't attach the one night data correctly, try again!
The summary data in the body of the post is 6 months worth.
Once again Sorry!!!!, I shall give a bit more detail:-
Have been using cpap for over 5 years.
I use it every time I sleep.
Can honestly say except for the first month I never waken feeling really refreshed and raring to go!! (have mentioned this to the sleep clinic but they dismiss my concerns).
Looking at the daily leak data (6months worth) I got from the machine almost 75% of days breach the 24l/m that ResScan give as acceptable, as I have used the same machine and mask for more than 3 years I believe the leak rates would be the same for those years as well.
We have the National Health Service here in the UK, I only see them once a year, up to now I believed they looked at the data prior to seeing me. I am now not so sure!!!!!!
I had taped my mouth closed the previous 2 nights but I still managed to force air past the tape, there was clear leaks lasting over 10 min each every 90 min or so.
I recommend you call the health service and tell them your leak rate is above 24 L/min. If a chin strap doesn't get the leak rate under 24 L/min you'll have to try a full face mask.
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leak is quite acceptable, only for brief period went over the red line
the spike in the leak graph especially the one above the red line point to variable leaks, more likely mouth leaks
a chinstrap would help keeping mouth closed as PollCat suggested
full face mask allows to breathe thru nose or mouth but for me would brings more problem than trying to solve but everyone is different