Judgment of the Court (Tenth Chamber) of 9 February 2023.#European Commission v Slovak Republic.#Failure of a Member State to fulfil obligations – Environment – Directive 2008/50/EC – Ambient air quality – Article 13(1) and Annex XI – Systematic and persistent exceeding of the limit values applicable to microparticles (PM10) in certain zones of Slovakia – Article 23(1) – Annex XV – Period during which those limit values are exceeded ‘as short as possible’ – Appropriate measures.#Case C-342/21.