Website (in French) : https://www.gendarmerie.interieur.gouv.fr/barometre-numerique/
Background notes (in English): https://github.com/GendarmerieNationale/barometre-numerique-notes/blob/main/barometre_numerique_notes.pdf
Source code (in Javascript) : https://github.com/GendarmerieNationale/barometre-numerique-website