Assessment of air quality before and during the COVID-19 and its potential health impacts in an arid oasis city: Urumqi, China.

Stoch Environ Res Risk Assess · 2023 · PMC9676778 · PMID 36438164

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showed a trendno p-value reported

The highest value of ρ(O 3 _8h), 96.39 μg m −3 , occurred at site S6 in 2017, the lowest value (54.61 μg m −3 ) occurred at site S3 in 2017, and the average value from 2017 to 2021 showed a trend that increased, then decreased, and then increased.

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