0 1 2 3 Fri 13 Jan 1967 Wed 01 Feb 1967 Wed 01 Mar 1967 Sat 01 Apr 1967 Mon 01 May 1967 Thu 01 Jun 1967 Sat 01 Jul 1967 Tue 01 Aug 1967 Fri 01 Sep 1967 Sun 01 Oct 1967 Wed 01 Nov 1967 Fri 01 Dec 1967 Mon 01 Jan 1968 Fri 12 Jan 1968 Hours Slept Hours Slept Rolling Average Total Time in Bed Total Rolling Average
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