0 1 2 3 Mon 19 Dec 1927 Sat 24 Dec 1927 Thu 29 Dec 1927 Tue 03 Jan 1928 Sun 08 Jan 1928 Fri 13 Jan 1928 Wed 18 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