0 1 2 3 Sun 21 Dec 1986 Thu 01 Jan 1987 Sun 01 Feb 1987 Sun 01 Mar 1987 Sat 21 Mar 1987 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