Geospatial analysis of COVID-19 lockdown effects on air quality in the South and Southeast Asian region.

Sci Total Environ · 2021 · PMC7833964 · PMID 33250248

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a decreasing trendno p-value reported

In Spain, a decreasing trend in air pollution was observed just after two weeks of the imposition of lockdown measures -the average PM 10 concentration decreased by 28–31% ( Tobías et al., 2020 ).

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