0 1 2 3 Thu 13 Dec 1928 Sat 22 Dec 1928 Mon 31 Dec 1928 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