0 1 2 3 Tue 21 Dec 1976 Sat 01 Jan 1977 Tue 01 Feb 1977 Tue 01 Mar 1977 Mon 21 Mar 1977 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