Figure 1: Percentage of the Belgian population potentially exposed to O3 concentrations
percentage above the European target value for 2010 (no more than 25 exceedances of the daily highest eight-hourly averaged O3 concentration of 120 µg/m3 averaged over three years) and percentage above the European long-term objective (no more exceedances of the daily highest eight-hourly averaged O3 concentration of 120 µg/m³)
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