That's REM sleep hypopnea I believe (look like central hypopneas actually if such things exist). Looks at the timing of the clusters. They are all almost ninety minutes apart and as the night progress, you get more events.

I can confirm. The medium wide is the one on the bottom left.

I got the fitpack with the medium frame. If you are talking about the cushions, yes the medium wide cushion is larger than all the other (2.5'' insted of 2'') but is the same depth as a medium.