Morning temperatures can read too high.
« Date: 2005 2006 2007 2008 2009 2010 2011 2012 2013 01 02 03 04 05 06 07 08 09 10 11 12 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 » Interval: 60 mins 30 mins 20 mins 15 mins 10 mins 5 mins 2 mins 1 min
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Today we switched from GMT to BST, hence the jump from 00:59 to 02:00.