0 1 2 3 Mon 13 Dec 1971 Sat 18 Dec 1971 Thu 23 Dec 1971 Tue 28 Dec 1971 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