Impact analysis of meteorological variables on PM<sub>2.5</sub> pollution in the most polluted cities in China.

Heliyon · 2023 · PMC10359771 · PMID 37483720

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a decreasing trendno p-value reported

In most areas of China, although PM 2.5 concentrations have shown a decreasing trend, exceedance rates remain high [ 12 , 13 ].

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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.