0 1 2 3 Thu 12 Feb 1931 Sun 01 Mar 1931 Wed 01 Apr 1931 Fri 01 May 1931 Wed 13 May 1931 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