0 1 2 3 Fri 06 Dec 1957 Wed 01 Jan 1958 Sat 01 Feb 1958 Sat 01 Mar 1958 Thu 06 Mar 1958 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