96Infringement of those provisions is examined in that context at the level of zones and agglomerations, and exceedance must be analysed for each zone or agglomeration on the basis of results from each measuring station. The Court has held, in that regard, that Article 13(1) and Article 23(1) of Directive 2008/50 must be interpreted, in accordance with the general scheme and purpose of the rules of which those provisions form part, as meaning that, in order to establish whether a limit value with an averaging period of one calendar year, as laid down in Annex XI to that directive, has been exceeded, it is sufficient that a pollution level higher than that value be measured at a single sampling point (judgments of 26 June 2019, Craeynest and Others, C‑723/17, EU:C:2019:533, paragraphs 60, 66 and 68, and of 30 April 2020, Commission v Romania (Exceedance of limit values for PM10), C‑638/18, not published, EU:C:2020:334, paragraph 73).
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