date | value
2011-01-a3 | 3
2011-01-03 | 2
2011-01-03 | 1
2011-01-03 | 1.2
2011-01-09 | 1
2012-01-11 | -1
2001-42-42
2012-01-11 | 1
2012-01-11 | 2147483648
2011-04-31 | 5
2011-06-31 | 3
2009-02-29 | 1
2008-02-29 | 1
2010-13-01 | 1
2010-00-01 | 1
2007-01-01 | 1
2011-01-00 | 1
2011-01-32 | 1
2011-11-30 | 10
2011-11-31 | 10
somegarbage
2012-01-11 | 0
2012-01-11 | 1000
2012-01-11 | 1000.1
2012-01-11 | abc