COVID-19 induced lockdown and decreasing particulate matter (PM10): An empirical investigation of an Asian megacity.

Urban Clim · 2021 · PMC7846237 · PMID 33552884

Europe PMC DOI

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a decreasing trendno p-value reported

It happens because along all these six lines there is a decreasing trend of the built-up area following the distance-decay function.

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an increasing trendno p-value reported

Thus, these two sections depicted an increasing trend of PM 10 level towards the periphery for data set 1.

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