Division 3 Pollutants, units of measurement, averaging times:F1 United Kingdom Repealed Original text. Later amendments are not shown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Annotations Textual amendments F1 Repealed by Directive 2008/50/EC of the European Parliament and of the Council of 21 May 2008 on ambient air quality and cleaner air for Europe. ← Division 2 Division 3 Division 4 →