0 1 2 3 Thu 20 Jan 1938 Tue 01 Feb 1938 Tue 01 Mar 1938 Fri 01 Apr 1938 Sun 01 May 1938 Wed 01 Jun 1938 Fri 01 Jul 1938 Mon 01 Aug 1938 Thu 01 Sep 1938 Sat 01 Oct 1938 Tue 01 Nov 1938 Thu 01 Dec 1938 Sun 01 Jan 1939 Thu 19 Jan 1939 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