DATA THROUGH 2010 State ID YRS DEC JAN FEB MAR D-J-F-M %Ann APR MAY JUN JUL AUG SEP OCT NOV ANN ANN'  
ALBANY NY ALB 64 14.9 16.7 13.6 11.3 56.5 89% 2.8 0.1 0.0 0.0 0.0 0.0 0.2 3.9 63.7 63.5 0.2
ALLENTOWN PA ABE 64 6.4 8.8 10.0 5.9 31.1 94% 0.7 0.0 0.0 0.0 0.0 0.0 0.1 1.3 32.8 33.2 -0.4
ASHEVILLE NC AVL 46 2.5 4.7 4.0 3.1 14.3 91% 0.7 0.0 0.0 0.0 0.0 0.0 0.0 0.7 15.1 15.7 -0.6
ATLANTIC CITY AP NJ ACY 61 2.9 5.1 6.1 2.6 16.7 96% 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.4 16.5 17.4 -0.9
AVOCA PA AVP 44 9.0 12.1 11.1 9.1 41.3 86% 2.9 0.1 0.0 0.0 0.0 0.0 0.2 3.5 48.2 48.0 0.2
BALTIMORE MD BWI 60 3.6 6.0 7.7 3.6 20.9 95% 0.1 0.0 0.0 0.0 0.0 0.0 0.0 1.0 21.3 22.0 -0.7
BANGOR ME BGR 30 14.1 18.7 15.5 11.2 59.5 88% 4.5 0.05 0.0 0.0 0.0 0.05 0.1 3.3 67.5 67.5 0.0
BINGHAMTON NY BGM 59 18.3 21.0 17.7 15.0 72.0 85% 4.6 0.3 0.0 0.0 0.0 0.0 0.8 7.3 84.9 85.0 -0.1
BLOCK IS. RI BID 27 2.9 5.1 6.3 5.7 20.0 98% 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.2 20.5 20.5 0.0
BLUE HILL MA MQE 125 11.6 15.7 15.8 11.8 54.9 90% 3.3 0.1 0.0 0.0 0.0 0.0 0.2 2.8 61.2 61.3 -0.1
BOSTON MA BOS 73 8.5 12.9 11.8 8.0 41.2 95% 0.9 0.0 0.0 0.0 0.0 0.0 0.0 1.3 43.4 43.4 0.0
BRIDGEPORT CT BDR 55 5.2 7.5 8.1 4.8 25.6 95% 0.7 0.0 0.0 0.0 0.0 0.0 0.0 0.6 26.7 26.9 -0.2
BUFFALO NY BUF 67 24.5 24.5 17.8 12.5 79.3 84% 3.2 0.2 0.0 0.0 0.0 0.0 0.7 10.8 94.1 94.2 -0.1
BURLINGTON VT BTV 67 19.1 19.8 17.0 13.6 69.5 86% 4.0 0.2 0.0 0.0 0.0 0.0 0.2 6.5 80.1 80.4 -0.3
CAPE HATTERAS NC HSE 38 0.6 0.4 0.5 0.4 1.9 100% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.9 1.9 0.0
CARIBOU ME CAR 70 23.6 24.1 22.0 19.8 89.5 80% 8.3 0.8 0.0 0.0 0.0 0.0 2.0 11.6 113.1 112.2 0.9
CHARLOTTE NC CLT 71 0.5 2.2 1.8 1.2 5.7 98% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 5.8 5.8 0.0
CONCORD NH CON 69 14.4 18.2 14.4 11.6 58.6 90% 2.8 0.1 0.0 0.0 0.0 0.0 0.1 3.8 65.4 65.4 0.0
ERIE PA. ERI 55 24.4 25.9 16.5 12.1 78.9 85% 3.1 0.0 0.0 0.0 0.0 0.0 0.3 10.2 92.6 92.5 0.1
GREENSBORO-WINSTON-SALEM NC GSO 82 1.4 3.6 2.5 1.7 9.2 99% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 9.2 9.3 -0.1
HARRISBURG PA CXY 52 6.8 9.7 9.2 6.1 31.8 93% 0.5 0.0 0.0 0.0 0.0 0.0 0.0 2.0 34.3 34.3 0.0
HARTFORD CT BDL 53 11.0 13.1 12.3 10.0 46.4 93% 1.5 0.0 0.0 0.0 0.0 0.0 0.1 2.1 50.1 50.1 0.0
ISLIP NY ISP 23 5.7 7.4 7.2 5.3 25.6 93% 0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.9 26.5 27.4 -0.9
LYNCHBURG VA LYH 59 3.2 5.6 5.4 3.4 17.6 95% 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.7 18.2 18.5 -0.3
MIDDLETOWN PA MDT 71 6.7 9.8 9.6 6.0 32.1 93% 0.6 0.0 0.0 0.0 0.0 0.0 0.0 2.0 34.4 34.7 -0.3
MT. WASHINGTON NH MWN 78 43.0 39.9 40.5 42.8 166.2 64% 30.8 11.5 1.3 1.3 0.1 2.0 14.2 32.9 260.6 260.3 0.3
NEW YORK (JFK AP) NY JFK 52 4.5 6.5 8.5 3.9 23.4 96% 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.3 23.8 24.3 -0.5
NEW YORK (LAGUARDIA AP) NY LGA 66 5.5 6.9 9.2 4.7 26.3 96% 0.7 0.0 0.0 0.0 0.0 0.0 0.0 0.5 27.2 27.5 -0.3
NEW YORK C.PARK NY NYC 142 5.7 7.7 8.9 5.1 27.4 94% 0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.9 28.9 29.2 -0.3
NEWARK NJ EWR 69 6.2 7.5 9.1 4.9 27.7 95% 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.6 28.5 29.1 -0.6
NORFOLK VA ORF 60 1.3 3.1 2.9 1.0 8.3 100% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.9 8.3 -0.4
PHILADELPHIA PA PHL 68 3.8 6.0 7.7 3.5 21.0 95% 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.7 21.2 22.0 -0.8
PITTSBURGH PA PIT 58 8.4 12.1 10.2 8.0 38.7 87% 1.8 0.1 0.0 0.0 0.0 0.0 0.4 3.4 43.6 44.4 -0.8
PORTLAND ME PWM 70 15.1 19.1 16.4 13.1 63.7 90% 3.1 0.2 0.0 0.0 0.0 0.0 0.2 3.3 70.9 70.5 0.4
PROVIDENCE RI PVD 57 7.6 9.6 9.6 7.3 34.1 94% 0.7 0.2 0.0 0.0 0.0 0.0 0.1 1.3 36.7 36.4 0.3
RALEIGH NC RDU 66 0.9 2.8 2.6 1.3 7.6 99% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 7.6 7.7 -0.1
RICHMOND VA RIC 71 2.2 5.0 3.9 2.5 13.6 96% 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.4 13.8 14.1 -0.3
ROANOKE VA ROA 56 4.2 6.7 6.8 3.5 21.2 92% 0.4 0.0 0.0 0.0 0.0 0.0 0.0 1.5 22.9 23.1 -0.2
ROCHESTER NY ROC 70 20.8 24.8 22.2 15.4 83.2 88% 3.4 0.3 0.0 0.0 0.0 0.0 0.2 7.2 93.8 94.3 -0.5
SALISBURY MD SBY 30 2.1 3.7 2.7 2.1 10.7 96% 0.3 0.0 0.0 0.0 0.0 0.0 0.1 0.0 11.1 11.1 0.0
SYRACUSE NY SYR 61 29.2 31.6 26.7 17.9 105.4 88% 3.7 0.1 0.0 0.0 0.0 0.0 0.6 9.6 118.4 119.4 -1.0
WALLOPS ISLAND VA WAL 31 2.2 2.8 3.6 0.7 9.3 96% 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.2 8.6 9.7 -1.1
WASHINGTON DULLES AP VA IAD 48 3.9 7.1 8.0 3.4 22.4 93% 0.4 0.0 0.0 0.0 0.0 0.0 0.0 1.2 23.3 24.0 -0.7
WASHINGTON NAT'L AP VA DCA 67 3.2 5.2 5.8 2.3 16.5 84% 2.3 0.0 0.0 0.0 0.0 0.0 0.0 0.8 19.2 19.6 -0.4
WILLIAMSPORT PA IPT 66 8.3 10.7 10.1 8.1 37.2 90% 1.2 0.0 0.0 0.0 0.0 0.0 0.1 2.8 41.5 41.3 0.2
WILMINGTON DE ILG 60 3.7 6.6 7.2 3.3 20.8 95% 0.2 0.0 0.0 0.0 0.0 0.0 0.1 0.9 21.3 22.0 -0.7
WILMINGTON NC ILM 59 0.6 0.5 0.6 0.4 2.1 100% 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 2.1 -0.1
WORCESTER MA ORH 48 14.0 17.1 16.8 13.8 61.7 89% 3.5 0.3 0.0 0.0 0.0 0.0 0.5 3.5 69.7 69.5 0.2