0 1 2 3 Sun 10 Dec 1972 Tue 19 Dec 1972 Thu 28 Dec 1972 Sat 06 Jan 1973 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