Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1990,,,,,,,,,,267,125,68,,
1991,32,67,127,150,186,695,848,721,649,371,135,88,341,
1992,90,112,212,216,509,1002,1217,1034,931,535,193,68,513,
1993,25,,,,,,,,,,,,,
1994,,,,220,423,743,728,697,668,546,235,76,,
1995,66,106,138,198,379,631,1147,883,768,493,224,130,430,
1996,80,6,113,194,405,618,1089,1001,650,465,184,68,406,
1997,,3,5,137,307,534,979,945,625,408,200,108,,
1998,45,49,110,193,306,621,1118,1044,736,435,181,82,410,
1999,20,,131,179,306,622,1143,1040,731,454,234,99,,
2000,51,17,130,202,366,695,1178,924,614,412,181,90,405,
2001,81,106,167,211,444,804,1261,1064,678,441,259,,460,
2002,,,70,238,369,724,1176,1218,654,434,196,115,,
2003,76,102,80,200,374,748,1185,786,653,498,187,93,415,
2004,65,75,142,234,380,714,1186,978,709,431,193,119,436,
2005,68,137,165,206,386,690,1170,958,650,424,186,65,425,
2006,15,97,105,161,281,706,1166,954,661,436,208,88,407,
2007,80,92,168,229,418,766,1076,951,673,407,215,88,430,
2008,61,96,147,175,306,660,1042,1001,615,387,212,91,399,
2009,83,116,90,193,362,685,1181,986,726,391,193,116,427,
2010,87,129,160,224,298,617,1159,984,677,441,170,92,420,
2011,87,125,126,156,269,543,1139,1034,757,428,172,125,413,
2012,108,107,116,206,305,,,,,,,,,