0 1 2 3 Thu 30 Dec 1971 Thu 06 Jan 1972 Thu 13 Jan 1972 Thu 20 Jan 1972 Thu 27 Jan 1972 Thu 03 Feb 1972 Thu 10 Feb 1972 Thu 17 Feb 1972 Sun 20 Feb 1972 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