0 1 2 3 Tue 01 Feb 1972 Wed 01 Mar 1972 Sat 01 Apr 1972 Sun 30 Apr 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