0 1 2 3 Thu 31 Aug 1972 Mon 04 Sep 1972 Fri 08 Sep 1972 Tue 12 Sep 1972 Sat 16 Sep 1972 Wed 20 Sep 1972 Sun 24 Sep 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