0 1 2 3 Sun 12 Dec 1909 Sat 01 Jan 1910 Tue 01 Feb 1910 Tue 01 Mar 1910 Sat 12 Mar 1910 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