0 1 2 3 Sun 16 Jul 1972 Fri 21 Jul 1972 Wed 26 Jul 1972 Mon 31 Jul 1972 Sat 05 Aug 1972 Thu 10 Aug 1972 Tue 15 Aug 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