Table 2 Spatio-temporal distribution of cardiovascular ED visits and air pollutants
From: Ambient air quality and spatio-temporal patterns of cardiovascular emergency department visits
Mean ± SD | Min. | 1st Q. | Median | 3rd Q. | Max. | |
|---|---|---|---|---|---|---|
ED visits | ||||||
Daily counts per zip | 0.09 ± 0.31 | 0.00 | 0.00 | 0.00 | 0.00 | 3.00 |
Total counts per zip | 31.69 ± 32.39 | 0.00 | 7.75 | 22.50 | 45.75 | 153.00 |
Total counts per day | 7.29 ± 2.75 | 0.00 | 5.00 | 7.00 | 9.00 | 16.00 |
Air pollutants | ||||||
NO\(_2\) (ppmv) | 6.26 ± 4.31 | 0.38 | 2.87 | 5.15 | 8.59 | 24.29 |
PM2.5 (\(\upmu \hbox {g}/\hbox {m}^3\)) | 9.48 ± 4.76 | 1.13 | 5.88 | 8.60 | 12.00 | 29.22 |
Ozone (ppb) | 39.63 ± 10.81 | 13.77 | 31.87 | 38.65 | 45.44 | 87.21 |