Air pollutant emissions 
Concentration of particulate matter 
Occupational respiratory diseases 
Outdoor air pollution 
Hospital days caused by traffic-related air pollution 
Definitions/Comments:
Nitrogen oxide (NOX) includes NO and NO2. The emission levels are displayed in NO2. Concentration of particulate matter: The measurement method changed in 1997. Emissions limit for concentration of particulate matter (annual mean value): 20 micrograms per cubic metre.
Source: SFOEN
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