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Table 3 Descriptive statistics of air pollution and temperature in geocoded areas with participants during the study period

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

  1. SD standard deviation, Min minimum, 25% the 25th percentile, 75% the 75th percentile, Max maximum, IQR interquartile range, PM2.5 particulate matter ≤ 2.5 μm in aerodynamic diameter, O3 ozone, ppb parts per billion