0 1 2 3 Fri 17 Dec 1971 Mon 20 Dec 1971 Thu 23 Dec 1971 Sun 26 Dec 1971 Wed 29 Dec 1971 Sat 01 Jan 1972 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