0 1 2 3 Sat 01 Apr 1972 Tue 04 Apr 1972 Fri 07 Apr 1972 Mon 10 Apr 1972 Thu 13 Apr 1972 Sun 16 Apr 1972 Wed 19 Apr 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