0 1 2 3 Sat 10 Dec 1977 Tue 13 Dec 1977 Fri 16 Dec 1977 Mon 19 Dec 1977 Thu 22 Dec 1977 Sun 25 Dec 1977 Wed 28 Dec 1977 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