0 1 2 3 Tue 17 Jul 1928 Fri 20 Jul 1928 Mon 23 Jul 1928 Thu 26 Jul 1928 Sun 29 Jul 1928 Wed 01 Aug 1928 Sat 04 Aug 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