0 1 2 3 Sat 17 Dec 1927 Thu 22 Dec 1927 Tue 27 Dec 1927 Sun 01 Jan 1928 Fri 06 Jan 1928 Wed 11 Jan 1928 Mon 16 Jan 1928 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