Impacts of Covid-19 interventions on air quality: evidence from Brazilian metropolitan regions.

Int J Environ Sci Technol (Tehran) · 2023 · PMC9063257 · PMID 35529589

Europe PMC DOI

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a little significantno p-value reported

Belém, Belo Horizonte, Campinas, and Curitiba metropolitan regions Belém metropolitan region, located in northern Brazil, presented a little significant reduction of 2.6% in the concentration of NO 2 in the two periods studied.

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