0 1 2 3 Tue 01 Feb 1977 Fri 04 Feb 1977 Mon 07 Feb 1977 Thu 10 Feb 1977 Sun 13 Feb 1977 Wed 16 Feb 1977 Sat 19 Feb 1977 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