0 1 2 3 Tue 20 Nov 1979 Sat 01 Dec 1979 Tue 01 Jan 1980 Fri 01 Feb 1980 Sat 01 Mar 1980 Tue 01 Apr 1980 Fri 11 Apr 1980 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