0 1 2 3 Thu 22 Sep 1927 Sat 01 Oct 1927 Tue 01 Nov 1927 Thu 01 Dec 1927 Thu 22 Dec 1927 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