Supplementary material to "Impacts of the COVID-19 lockdown on air pollution at regional and urban background sites in northern Italy"
Published in 2020 by
Jean-Philippe Putaud,
Luca Pozzoli,
Enrico Pisoni,
Sebastiao Martins Dos Santos,
Friedrich Lagler,
Guido Lanzani,
Umberto Dal Santo,
Augustin Colette 
