0 1 2 3 Thu 07 Jul 1921 Fri 15 Jul 1921 Sat 23 Jul 1921 Sun 31 Jul 1921 Mon 08 Aug 1921 Tue 16 Aug 1921 Wed 24 Aug 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