Is 92% of deep sleep possible?

Hey guys,

I have been using the app with sonar (closer than 1 mt) for a week and I average more than 70% for deep sleep. Last night I got 92% and wonder if I have a mistake. The graph shows me falling a sleep at 2.00 am, immediately into deep sleep and staying there till 6.00 am. Just some little bumps below REM line. What do you think?

Here is the screenshot:


Also curious about this. Does not look plausible…

I have gotten something like this, too. I think it is a bug or a failure to track sleep due to some issue of phone placement.