0 1 2 3 Thu 13 Jul 1972 Sun 16 Jul 1972 Wed 19 Jul 1972 Sat 22 Jul 1972 Tue 25 Jul 1972 Fri 28 Jul 1972 Mon 31 Jul 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