Do something for our planet, print this page only if needed. Even a small action can make an enormous difference when millions of people do it!
Distribution of stations by thresholds of PM2.5 annual mean concentrations for the year 2011.
Distribution of stations by thresholds of NO2 annual mean concentrations for the year 2011.
Distribution of stations by thresholds of 99.73 percentile of the hourly SO2 concentrations for the year 2011. The chart is based on the 99.73 percentile of the SO2 hourly concentrations, corresponding to the 25th highest SO2 concentration when data availability is 100% over the year.
Distribution of stations by thresholds of CO maximum daily max 8-hour mean for the year 2011.
Distribution of stations by thresholds of benzo(a)pyrene annual mean concentrations for the year 2011.