0 1 2 3 Sun 05 Jan 1997 Sat 01 Feb 1997 Sat 01 Mar 1997 Tue 01 Apr 1997 Thu 01 May 1997 Sun 01 Jun 1997 Tue 01 Jul 1997 Fri 01 Aug 1997 Mon 01 Sep 1997 Wed 01 Oct 1997 Sat 01 Nov 1997 Mon 01 Dec 1997 Thu 01 Jan 1998 Sun 04 Jan 1998 Hours Slept Hours Slept Rolling Average Total Time in Bed Total Rolling Average
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