0 1 2 3 Sun 11 Dec 1921 Fri 16 Dec 1921 Wed 21 Dec 1921 Mon 26 Dec 1921 Sat 31 Dec 1921 Thu 05 Jan 1922 Tue 10 Jan 1922 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