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Table 2 Distribution of daily concentrations of air pollution and aeroallergens at the Lingotto urban background monitoring station during the study period (883 days)

From: Air pollution, aeroallergens and admissions to pediatric emergency room for respiratory reasons in Turin, northwestern Italy

Exposure variable

available data (days)

median (IQR)

interquartile ratio

min-max

mean ± SD

EU annual reference valueb

PM2.5 (μg/m3)

833

22.0 (30.0)

1.4

4–157

32.0 ± 26.2

25

NO2 (μg/m3)

851

42.5 (32.0)

0.8

7.4–192.9

48.3 ± 25.0

40

O3 (μg/m3)

858

34.1 (53.6)

1.6

1.8–123.3

9.6 ± 29.1

 

aeroallergens (grains/m3)a

826

2.9 (19.6)

6.7

0–271.9

16.1 ± 29.6

 
  1. aincludes Corylaceae, Cupressaceae, Gramineae, Urticaceae, Ambrosia, Betula
  2. bEuropean Union (EU) Directive 2008/50/CE10 (http://ec.europa.eu/environment/air/quality/legislation/directive.htm)
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