0 1 2 3 Fri 08 Sep 1972 Mon 11 Sep 1972 Thu 14 Sep 1972 Sun 17 Sep 1972 Wed 20 Sep 1972 Sat 23 Sep 1972 Tue 26 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