Distribution of annual average concentrations of nitrogen oxides with an average annual background of NO2 of 3 μg/m3 for 2018.

The dataset contains 37 sites represented as area sites reflecting the distribution of annual average concentrations of nitrogen oxides with an average annual background of NO2 of 3 μg/m3 for 2018. For each site, a concentration level is indicated, allowing for the distinction of individual areas by the level of nitrogen oxides contamination. It can be used for mapping pollution with nitrogen oxides, spatial analysis of concentration distribution, comparison between different areas of the territory and monitoring of air quality. The data was updated as of 01.01.2021.

Machine-translated from Bulgarian. Titles, descriptions and file names may contain errors; the data files themselves are unchanged.View the original in Bulgarian