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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

Critical or Essential Use Approvals (CFCs) Compliance rate for the Montreal Protocol (% average value) BDN Production Allowance Limit (Methyl Bromide) Critical or Essential Use Approvals (Methyl Chloroform)

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