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DuPage County Statistics

AverageMedian# YearsHigh CountLow Count
All Years1183.81009252879 (1992)438 (2014)
1st 10 Years1745.91631102879 (1992)959 (1999)
Last 10 Years720.7725.5101032 (2007)438 (2014)
Likelihood that the numbers counted have decreased: 99%*.

Fermilab Site Statistics

AverageMedian# YearsHigh CountLow Count
All Years24.5211861 (1997)1 (2008)
1st 10 Years29.424.51061 (1997)18 (2002)
Last 10 Years20.118.51056 (2013)1 (2008)
Likelihood that the numbers counted have decreased: 87%*.

* The probability is obtained from a "Wilcoxon two-sample test" comparing the numbers reorded in the first 10 years with those recorded in the last 10 years.

DuPage County Data

YearTallyYearTallyYearTallyYearTally
19902385199114181992287919932030
19941844199519951996131119971289
1998134919999592000112220011090
200278520039242004100920051000
20068982007103220087482009717
2010544201157820127342013518
2014438

Fermilab Site Data

YearTallyYearTallyYearTallyYearTally
1990--1991--1992--1993--
1994--1995--1996--199761
199831199946200022200118
200218200319200425200524
2006302007172008120094
201010201112201220201356
201427