0 1 2 3 Sun 11 Dec 1938 Sun 18 Dec 1938 Sun 25 Dec 1938 Sun 01 Jan 1939 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