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Definition
The mean annual concentration of fine suspended particles of less than 2.5 microns in diameters (PM2.5) is a common measure of air pollution. The mean is a population-weighted average for urban population in a country, and is expressed in micrograms per cubic meter [mg/m3].

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Related Variables

Laboratory/Analytical Uses Consumption (Carbon Tetrachloride) Laboratory/Analytical Uses Consumption (CFCs) GDP aggregation Laboratory/Analytical Uses Production (Halons)

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