0 1 2 3 Mon 10 Dec 1928 Sat 15 Dec 1928 Thu 20 Dec 1928 Tue 25 Dec 1928 Sun 30 Dec 1928 Fri 04 Jan 1929 Wed 09 Jan 1929 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