0 1 2 3 Sun 18 Dec 1977 Sun 01 Jan 1978 Wed 01 Feb 1978 Wed 01 Mar 1978 Sat 18 Mar 1978 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