Impact of COVID-19 restrictions on the dry deposition fraction of settleable particulate matter at three industrial urban/suburban locations in northern Spain.

Atmos Environ (1994) · 2022 · PMC9637955 · PMID 36373064

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an increasing trendno p-value reported

However, they found an increasing trend of PM2.5 levels in the minor lockdown (from March 15, 2020 to March 29, 2020) and O 3 levels in the whole period.

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