0 1 2 3 Mon 27 Dec 1971 Fri 31 Dec 1971 Tue 04 Jan 1972 Sat 08 Jan 1972 Wed 12 Jan 1972 Sun 16 Jan 1972 Thu 20 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