0 1 2 3 Thu 15 Dec 1949 Sun 01 Jan 1950 Wed 01 Feb 1950 Wed 01 Mar 1950 Wed 15 Mar 1950 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