0 1 2 3 Sun 13 Feb 1972 Thu 17 Feb 1972 Mon 21 Feb 1972 Fri 25 Feb 1972 Tue 29 Feb 1972 Sat 04 Mar 1972 Wed 08 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