0 1 2 3 Fri 31 Dec 1971 Wed 05 Jan 1972 Mon 10 Jan 1972 Sat 15 Jan 1972 Thu 20 Jan 1972 Tue 25 Jan 1972 Sun 30 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