Contents
2.Member States shall identify locations or areas with similar concentrations to those at a sampling point for a given pollutant using tolerance levels in accordance with Article 6(3) for measurements and tolerance levels in accordance with Article 7(2) for modelling applications.For the purpose of the first subparagraph, the central value shall be selected as follows:
(a)where measurements are used, the annual mean of the concentration measured at the sampling point is used as the central value to identify locations with similar concentrations;
(b)where modelling applications are used, the annual mean of the concentration modelled for the sampling point location is used as the central value to identify areas with similar concentrations.
Member States may use other metrics than the annual mean, such as relevant percentiles or seasonal averages, including hourly, eight-hour, daily, AOT40, and winter averages for pollutants with limit or target values established for metrics other than the annual mean.
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