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Table 1 Data distribution during March 1st through June 10th, 2002-2012 (2002-2011 for OTC allergy medication sales)

From: The associations between daily spring pollen counts, over-the-counter allergy medication sales, and asthma syndrome emergency department visits in New York City, 2002-2012

Variables Mean S.D. Min. 25 % 50 % 75 % 98 % Max.
OTC Allergy Medication Sales (# units sold/day) 3493 1953 901 2263 2943 4086 9565 17971
Asthma Syndrome ED Visits (visits/day)         
 All Ages 269.0 71.6 104 222 254 298 468 704
 Age 0-4 47.5 11.7 15 39 47 55 73 100
 Age 5-17 64.2 30.8 18 43 58 77 155 243
 Age 18-39 65.1 23.0 27 51 60 73 133 215
 Age 40-64 72.0 18.1 32 60 70 81 122 169
 Age 65+ 20.1 5.7 7 16 20 24 32 47
Spring Tree Pollen (grains/m3)         
 Elm 8.7 39.9 0 0 0 2.2 97.2 624.7
 Poplar 6.7 25.8 0 0 0 1.8 77.3 380.1
 Maple 15.3 101 0 0 0 7.2 130.0 3091.2
 Birch 142.8 649.1 0 0 1.8 21.6 1680.3 10235.3
 Beech 2.6 11.6 0 0 0 0 30.9 162.0
 Ash 17.9 73.1 0 0 0 2.2 223.3 1029.7
Syc./London plane 9.4 43.6 0 0 0 0 97.2 696.0
 Oak 190.6 683.9 0 0 2.1 57.0 1932.1 13040.4
 Hickory 11.3 41.4 0 0 0 2.2 131.4 768.9
Weather         
 Temperature (°C) 12.5 6.7 -7.7 8.1 12.6 17 26.3 31.8
 Rel. Humid. (%) 59.7 17.4 20.8 44.6 58.8 73.8 93.3 99.3
Air Pollutant         
 PM2.5 (μg/m3) 10.9 6.4 1.2 6.3 9.1 13.8 28.6 42.6
 Ozone (ppb) 35.7 11.8 3.9 28.4 34.8 41.8 66.7 93.5