0 1 2 3 Tue 04 Dec 1956 Tue 01 Jan 1957 Fri 01 Feb 1957 Fri 01 Mar 1957 Mon 04 Mar 1957 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