Exposure to fine particles above EC threshold values

Figure Created 12 Nov 2009 Published 12 Nov 2009 Last modified 29 Nov 2012

Exceedance days are defined as days with black smoke (BS) 24-hour average concentrations above 125 ?g/m 3 ; Total Suspended Particles (TSP) 24-hour average above 120 ?g/m 3 ; PM10 24-hour average above 50 ?g/m

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01 Jan 2002

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Number and set of cities and measuring methods vary from year to year, and this may cause much of the inter-annual variation. The increase after 1996 is mainly due to the introduction of PM10 data into the statistics. Only for the most recent years monitoring data on fine particulates (PM10) are available to a significant extent, which are shown separately at the right-hand side of the diagram.