Ozone weekend effect in cities: Deep insights for urban air pollution control.

Environ Res · 2020 · PMC7483290 · PMID 32919964

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a decreasing trendno p-value reported

The annual O 3 mean concentrations decreased on average by 0.34 ppb year −1 in Germany and by 0.33 ppb year −1 in the United States over the time period 2005–2014, while a decreasing trend of 0.08 ppb year −1 and 0.28 ppb year −1 was observed over the time period 2005–2018 ( Tab.

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