From Sebastian on 2017/04/14 07:58:18 +0000
Keep the “total sleep timer” as it is, but add 3 more timers, one tracks the deep sleep, second tracks light sleep and the last tracks when you are awake in the night.
If you add all 3 times together you should get the same time as the “total sleep” timer.
Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/18936178-another-timer-for-each-sleeping-state