0 1 2 3 Sun 28 Dec 1980 Thu 01 Jan 1981 Sun 01 Feb 1981 Sun 01 Mar 1981 Sat 28 Mar 1981 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