0 1 2 3 Sat 18 Dec 1971 Tue 21 Dec 1971 Fri 24 Dec 1971 Mon 27 Dec 1971 Thu 30 Dec 1971 Sun 02 Jan 1972 Wed 05 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