Statistical Characteristics of Aerosol Pollution of Atmosphere in Three Points of Tbilisi in 2017-2018
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Abstract
The statistical characteristics of the weight concentrations of aerosols (particulate matter PM2.5 and PM10) in three points of Tbilisi city (A. Kazbegi av., A. Tsereteli av. and Varketili) in 2017-2018 are represented. The data of National Environmental Agency of Georgia about the hourly values of PM2.5 and PM10 are used. In particular, it is obtained that the greatest average annual values of PM2.5 on the A. Tsereteli av. were observed (24.9 μg/m³, the range of the change: 0-440 μg/m³), smallest - on A. Kazbegi av. (16.6 μg/m³, the range of the change: 0-494 μg/m³). The greatest average annual values PM10 also on. A. Tsereteli av. were observed (57.2 μg/m³, the range of the change: 0-553 μg/m³), smallest - in Varketili (37.4 μg/m³, the range of the change: 0-319 μg/m³).
It is obtained, that the value of the linear correlation coefficient between the hourly values PM2.5 and PM10 on all points sufficiently high and changes from 0.77 to 0.89. The value of the correlation coefficient between the hourly values of PM2.5 between the points changes from 0.64 to 0.73, and PM10 - from 0.49 to 0.60.
The correspondence of values of PM2.5 and PM10 at the indicated points of Tbilisi city to the standards of WHO is examined.
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