0 1 2 3 Mon 18 Dec 1972 Tue 19 Dec 1972 Wed 20 Dec 1972 Thu 21 Dec 1972 Fri 22 Dec 1972 Sat 23 Dec 1972 Sun 24 Dec 1972 Mon 25 Dec 1972 Tue 26 Dec 1972 Wed 27 Dec 1972 Thu 28 Dec 1972 Fri 29 Dec 1972 Sat 30 Dec 1972 Sun 31 Dec 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