0 1 2 3 Sun 18 Dec 1921 Fri 23 Dec 1921 Wed 28 Dec 1921 Mon 02 Jan 1922 Sat 07 Jan 1922 Thu 12 Jan 1922 Tue 17 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