Measurements of nitrogen dioxide concentration
Measurements of nitrogen dioxide concentration
Measurements of the nitrogen dioxide concentration in the ambient air at 25 ground stations in Lombardy from 15 February to 15 April as an average over the years 2013 to 2019 (red line), and for the year 2020 (blue line). The grey shaded area shows the standard deviation (dispersion), the light red area shows the minimum and maximum value range of the previous years.
