0 1 2 3 Thu 28 Dec 1871 Mon 01 Jan 1872 Thu 01 Feb 1872 Fri 01 Mar 1872 Wed 27 Mar 1872 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