0 1 2 3 Wed 10 Jan 1979 Thu 01 Feb 1979 Thu 01 Mar 1979 Sun 01 Apr 1979 Tue 01 May 1979 Fri 01 Jun 1979 Sun 01 Jul 1979 Wed 01 Aug 1979 Sat 01 Sep 1979 Mon 01 Oct 1979 Thu 01 Nov 1979 Sat 01 Dec 1979 Tue 01 Jan 1980 Wed 09 Jan 1980 Hours Slept Hours Slept Rolling Average Total Time in Bed Total Rolling Average
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