The annual mean limit value is 40 µg NO2/m3 and to be met by 2010. Over the years 2001-2010 the total population, for which exposure estimates are made, increased from 92 to 116 million people due to an increasing number of monitoring stations reporting air quality data under the Exchange of Information Decision. Year-to-year variations in exposure classes are partly caused by the changes in spatial coverage. Only urban and sub-urban background monitoring stations have been included in the calculations. Data for Cyprus and Malta, are not included due to missing availability of operational urban and sub-urban background monitoring stations in the Urban Audit cities.
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If getting there by car, instead of by train or bus, be generous and share the space. By taking other people who might have made their journey in a separate car, you're putting one less car on the road.
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