0 1 2 3 Sun 11 Jan 1976 Sun 01 Feb 1976 Mon 01 Mar 1976 Thu 01 Apr 1976 Sat 01 May 1976 Tue 01 Jun 1976 Thu 01 Jul 1976 Sun 01 Aug 1976 Wed 01 Sep 1976 Fri 01 Oct 1976 Mon 01 Nov 1976 Wed 01 Dec 1976 Sat 01 Jan 1977 Sun 09 Jan 1977 Hours Slept Hours Slept Rolling Average Total Time in Bed Total Rolling Average
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