0 1 2 3 Tue 22 Aug 1972 Thu 31 Aug 1972 Sat 09 Sep 1972 Mon 18 Sep 1972 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