0 1 2 3 Fri 19 May 1972 Thu 01 Jun 1972 Sat 01 Jul 1972 Tue 01 Aug 1972 Thu 17 Aug 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