0 1 2 3 Tue 12 Dec 1978 Sun 17 Dec 1978 Fri 22 Dec 1978 Wed 27 Dec 1978 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