0 1 2 3 Tue 21 Mar 1972 Sun 26 Mar 1972 Fri 31 Mar 1972 Wed 05 Apr 1972 Mon 10 Apr 1972 Sat 15 Apr 1972 Thu 20 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