0 1 2 3 Sun 31 Dec 1972 Wed 03 Jan 1973 Sat 06 Jan 1973 Tue 09 Jan 1973 Fri 12 Jan 1973 Mon 15 Jan 1973 Thu 18 Jan 1973 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