0 1 2 3 Sun 05 Dec 1971 Fri 10 Dec 1971 Wed 15 Dec 1971 Mon 20 Dec 1971 Sat 25 Dec 1971 Thu 30 Dec 1971 Tue 04 Jan 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