0 1 2 3 Sun 31 Dec 1978 Mon 01 Jan 1979 Thu 01 Feb 1979 Thu 01 Mar 1979 Sat 31 Mar 1979 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