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: https://pasteboard.co/HXCJJqg.png