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. 2020 Jul 13;62:102382. doi: 10.1016/j.scs.2020.102382

Table 3.

Sample and GEV model estimated means, percentage of mean reduction in PM2.5 and p-values before (2019) and during lockdown periods.

25 March to 11 May 2019
 25 March to 11 May 2020
City Sample mean
(μg m−3)		 GEV estimated mean (μg m−3) Sample mean
(μg m−3)		 GEV estimated mean (μg m−3) % of mean reduction (2019−2020) p-value
Chennai 20 20 13 13 32 2.2e−16
Delhi 84 85 40 40 53 2.2e−16
Hyderabad 42 42 31 31 26 2.2e−16
Kolkata 38 38 29 29 24 2.2e−16
Mumbai 31 31 28 28 12 1.5e−09