0 1 2 3 Thu 09 Dec 1948 Sat 01 Jan 1949 Tue 01 Feb 1949 Tue 01 Mar 1949 Wed 09 Mar 1949 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