0 1 2 3 Mon 01 Dec 1975 Thu 01 Jan 1976 Sun 01 Feb 1976 Sun 29 Feb 1976 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