Characterizing the interruption-recovery patterns of urban air pollution under the COVID-19 lockdown in China.

Build Environ · 2021 · PMC8354860 · PMID 34393324

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showed a trendno p-value reported

Furthermore, the NO 2 and PM 10 concentrations at Level III showed a trend of decreasing again.

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a decreasing trendno p-value reported

In Table 7 , the Unit LoP of air pollutants except for O 3 showed a decreasing trend with the changed lockdown policies against the COVID-19.

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a significant trendno p-value reported

The PM 2.5 , PM 10 , and CO concentrations also exhibited a significant trend of decline in most cities.

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