Variation in Air Quality over Delhi Region: A Comparative Study for 2019 and 2020

Aerosol Science and Engineering · 2022 · PMC9122485

Europe PMC

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may not be significantno p-value reported

This may not be significant because of the imposed restriction during lockdown phases as shown in the Table 5 .

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an increasing trendno p-value reported

With progression of lockdown up to Unlock-III (i.e., April to October), an increasing trend was observed for NW (54.8 ± 9.3 μg m −3 ), ED (48.6 ± 11.9 μg m −3 ) and ND (42.6 ± 8.5 μg m −3 ) region.

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