Standard Deviation

month

2012 2013

January 21
February 17
March 35
April 10
May 12
June
July
August
September
October
November
December

2011 2012 2013

January 1
February 2
March
April 6
May 2
June 25
July 83
August 13
September 23
October 68
November 6
December 6

2011 2012

January
February
March
April
May 10
June
July
August
September
October 2
November 1
December 3

November 2011

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