0 1 2 3 Sun 13 Dec 1908 Fri 01 Jan 1909 Mon 01 Feb 1909 Mon 01 Mar 1909 Sat 13 Mar 1909 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