0 1 2 3 Tue 11 Jan 1972 Tue 18 Jan 1972 Tue 25 Jan 1972 Tue 01 Feb 1972 Tue 08 Feb 1972 Tue 15 Feb 1972 Tue 22 Feb 1972 Tue 29 Feb 1972 Tue 07 Mar 1972 Sun 12 Mar 1972 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