0 1 2 3 Tue 04 Jan 1921 Tue 11 Jan 1921 Tue 18 Jan 1921 Tue 25 Jan 1921 Tue 01 Feb 1921 Tue 08 Feb 1921 Tue 15 Feb 1921 Tue 22 Feb 1921 Tue 01 Mar 1921 Tue 08 Mar 1921 Tue 15 Mar 1921 Mon 21 Mar 1921 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