0 1 2 3 Sun 11 Dec 1977 Thu 22 Dec 1977 Mon 02 Jan 1978 Fri 13 Jan 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