0 1 2 3 Fri 13 Feb 1920 Mon 01 Mar 1920 Thu 01 Apr 1920 Sat 01 May 1920 Thu 13 May 1920 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