0 1 2 3 Tue 21 Feb 1956 Thu 01 Mar 1956 Sun 01 Apr 1956 Tue 01 May 1956 Mon 21 May 1956 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