0 1 2 3 Sun 20 Dec 1914 Fri 01 Jan 1915 Mon 01 Feb 1915 Mon 01 Mar 1915 Sat 20 Mar 1915 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