0 1 2 3 Mon 15 Sep 1975 Tue 30 Sep 1975 Wed 15 Oct 1975 Thu 30 Oct 1975 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