From: Short-term effects of fine particulate matter and ozone on the cardiac conduction system in patients undergoing cardiac catheterization
Mean ± SD
Min
25%
Median
75%
Max
IQR
PM2.5 (μg/m3)
11.2 ± 5.5
0.9
7.3
10.1
14.2
54.5
7.0
O3 (ppb)
40.5 ± 12.8
8.6
30.4
39.5
49.8
97.6
19.4
Air temperature (°C)
16.8 ± 8.1
-4.7
10.2
17.8
24.0
31.0
13.8