0 1 2 3 Tue 28 Dec 1880 Sat 01 Jan 1881 Tue 01 Feb 1881 Tue 01 Mar 1881 Mon 28 Mar 1881 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