0 1 2 3 Mon 11 Dec 1972 Fri 15 Dec 1972 Tue 19 Dec 1972 Sat 23 Dec 1972 Wed 27 Dec 1972 Sun 31 Dec 1972 Thu 04 Jan 1973 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