0 1 2 3 Thu 30 Dec 1971 Mon 03 Jan 1972 Fri 07 Jan 1972 Tue 11 Jan 1972 Sat 15 Jan 1972 Wed 19 Jan 1972 Sun 23 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