Table 2.
Monthly means (standard deviation) of daily asthma hospital visits, aeroallergen concentrations, ozone, PM2.5 levels, temperature and humidity of April through October 2002
| Month | April | May | June | July | August | September | October |
|---|---|---|---|---|---|---|---|
| Hospital visits (days) | 9 (3.6) | 12 (4.2) | 7 (3.3) | 6 (3.3) | 7 (2.2) | 12 (4.1) | 11 (3.6) |
| Total pollen (m3) | 946 (1766.2) | 203 (224.5) | 61 (79.7) | 6 (4.5) | 26 (36.9) | 47 (44.7) | 2 (2.9) |
| Ragweed (m3) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 24 (36.2) | 42 (43.0) | 1 (1.0) |
| Grass (m3) | 1 (1.3) | 6 (11.2) | 21 (24.1) | 4 (2.6) | 1 (1.0) | 1 (1.2) | 0 (0.5) |
| Oak/maple (m3) | 73 (104.9) | 46 (66.5) | 1 (1.1) | 0 (0.0) | 0 (0.0) | 0 (0.1) | 0 (0.0) |
| Pinaceae (m3) | 18 (33.1) | 47 (64.1) | 5 (6.6) | 0 (0.4) | 0 (0.0) | 0 (0.1) | 0 (0.0) |
| Total fungal (m3) | 2646 (1642.3) | 2861 (1559.4) | 5487 (1918.6) | 3986 (1227.0) | 7249 (3265.1) | 5401 (3739.6) | 40,149 (26,538.1) |
| Alternaria (m3) | 9 (18.6) | 3 (8.1) | 71 (67.8) | 88 (80.8) | 161 (105.0) | 173 (247.5) | 962 (687.5) |
| Aspergillus/Penicillium | (m3) 1412 (980.5) | 1044 (951.1) | 2467 (1311.1) | 1849 (805.9) | 1515 (796.7) | 1240 (615.1) | 11,049 (8861.5) |
| Cladosporium (m3) | 416 (486.0) | 412 (228.1) | 1339 (1008.5) | 976 (816.3) | 3842 (2566.7) | 2596 (2728.7) | 11,282 (11,134.4) |
| Ozone (ppb) | 28.8 (7.2) | 29.2 (8.6) | 36.0 (7.3) | 42.4 (9.5) | 35.0 (5.9) | 28.5 (11.7) | 11.1 (5.9) |
| PM2.5 (μg/m3) | 12.4 (3.8) | 13.6 (5.8) | 21.6 (9.9) | 25.8 (11.9) | 20.3 (8.7) | 19.5 (11.1) | 12.8 (6.4) |
| Temperature (°F) | 56.2 (11.4) | 60.3 (8.7) | 72.6 (5.6) | 77.9 (3.3) | 75.7 (3.8) | 71.7 (7.4) | 53.4 (10.8) |
| Humidity (%) | 65.8 (12.9) | 72.4 (12.0) | 72.5 (11.2) | 69.5 (10.2) | 70.3 (11.5) | 66.7 (15.0) | 75.8 (10.1) |