Significant variation in air quality in South Indian cities during COVID-19 lockdown and unlock phases.

Environ Monit Assess · 2023 · PMC10229396 · PMID 37253943

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an increasing trendno p-value reported

The impact of lockdown on air quality was unanticipated in the case of PM 10 concentration, as an increasing trend was observed during the lockdown phases (6.29–155.33 μg/m 3 ) and then decreased during unlock phases (30.77–71.77 μg/m 3 ) (Fig. 2 ).

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