0 1 2 3 Fri 11 Feb 1972 Mon 14 Feb 1972 Thu 17 Feb 1972 Sun 20 Feb 1972 Wed 23 Feb 1972 Sat 26 Feb 1972 Tue 29 Feb 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