0 1 2 3 Mon 20 Dec 1971 Sat 01 Jan 1972 Tue 01 Feb 1972 Wed 01 Mar 1972 Sat 01 Apr 1972 Mon 01 May 1972 Tue 09 May 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