0 1 2 3 Mon 11 Jan 1971 Mon 01 Feb 1971 Mon 01 Mar 1971 Thu 01 Apr 1971 Sun 11 Apr 1971 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