Average concentration of UFP at and in the area around Paris Charles de Gaulle airport between September and December 2022 (number of UFP/cm3)
![Average concentration of UFP at and in the area around Paris Charles de Gaulle airport between September and December 2022 (number of UFP/cm<sup>3</sup>) [60]](/sites/default/files/styles/eaer_figures_tables/public/migrated_eaer_images/figure-2-8.png?itok=crUI0Opf)