0 1 2 3 Mon 21 Aug 1972 Tue 29 Aug 1972 Wed 06 Sep 1972 Thu 14 Sep 1972 Fri 22 Sep 1972 Sat 30 Sep 1972 Sun 08 Oct 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