0 1 2 3 Tue 20 Jul 1971 Wed 04 Aug 1971 Thu 19 Aug 1971 Fri 03 Sep 1971 Hours Slept Hours Slept Rolling Average Total Time in Bed Total Rolling Average <- Previous Period Next Period -> Date Range: to Offset: hours Data: Hours Slept Hours Laying Awake Total Time in Bed Total Dreams Show: Raw Data Rolling Average Rolling Average: Start from Zero Events: None Major All