0 1 2 3 Thu 12 Feb 1931 Thu 19 Feb 1931 Thu 26 Feb 1931 Thu 05 Mar 1931 Thu 12 Mar 1931 Thu 19 Mar 1931 Thu 26 Mar 1931 Thu 02 Apr 1931 Thu 09 Apr 1931 Thu 16 Apr 1931 Thu 23 Apr 1931 Thu 30 Apr 1931 Fri 01 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