Table 2 Descriptive statistics on environmental variables during the study period.

From: Short-term effects of air pollution on blood pressure

Values

Total

Air pollutants, median (interquartile range)

PM2.5, μg/m3

23 (18)

PM10, μg/m3

44 (33)

SO2, ppb

4 (2)

CO, ppm

0.5 (0.2)

O3, ppb

17 (26)

NO2, ppb

29 (24)

Meteorological data, mean (SD)

Temperature, °C

13.4 (18.2)

Atmospheric pressure, hPa

1017.0 (13.3)

Humidity, %

66 (37)

  1. Medians (IQR) or mean (standard deviation) are presented.
  2. PM2.5 denotes fine particulate matter (<2.5 µm); PM10, fine particulate matter (<10 µm); SO2, Sulfur dioxide; CO, carbon monoxide; O3, ozone; NO2, Nitrogen dioxide.
Back to article page