Spatio-Temporal Distribution Characteristics and Drivers of PM<sub>2.5</sub> Pollution in Henan Province, Central China, before and during the COVID-19 Epidemic.

Int J Environ Res Public Health · 2023 · PMC10049534 · PMID 36981695

Europe PMC DOI

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a decreasing trendno p-value reported

Areas characterized by a high concentration saw an increase between 2017 and 2019, and a decrease in 2020; values in low-concentration areas remained stable, and the spatial range showed a decreasing trend.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.

Spatio-Temporal Distribution Characteristics and Drivers of PM&lt;sub&gt;2.5&lt;/sub&gt; Pollution in Henan Province, Central China, before and during the COVID-19 Epidemic.

The sentences

Spatio-Temporal Distribution Characteristics and Drivers of PM<sub>2.5</sub> Pollution in Henan Province, Central China, before and during the COVID-19 Epidemic.