0 1 2 3 Tue 12 Dec 1922 Mon 01 Jan 1923 Thu 01 Feb 1923 Thu 01 Mar 1923 Mon 12 Mar 1923 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