0 1 2 3 Fri 15 Feb 1980 Sat 01 Mar 1980 Tue 01 Apr 1980 Thu 01 May 1980 Thu 15 May 1980 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