0 1 2 3 Sat 21 Dec 1918 Wed 01 Jan 1919 Sat 01 Feb 1919 Sat 01 Mar 1919 Fri 21 Mar 1919 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