Table 2.

Summary of changes in meteorological parameters during the pre-lockdown and lockdown period and, comparison of the same with 2019.

Parameter	2020			2019			% Difference when compared to 2019
	Pre Lockdown	Lockdown	% Difference	Pre Lockdown	Lockdown	% Difference	Pre Lockdown	Lockdown	Difference In Difference (approx. %)
Temperature (0C)	25.7 ± 1.6	28.7 ± 1.3	+11.7	27.5 ± 1.5	31.3 ± 1.7	+13.8	−6.5	−8.3	−2.1
Relative Humidity (%)	65.6 ± 7.9	62.4 ± 8.4	−4.9	58.8 ± 1.2	53.5 ± 1.2	−9.0	+11.6	+16.4	+4.1
ABL height (m)	742.1 ± 163.2	778.2 ± 209.4	+4.9	880.5 ± 214.0	952.9 ± 249.0	+8.2	−15.7	−18.3	−3.3
Wind Speed (m/s)	2.13 ± 0.49	2.0 ± 0.62	−6.2	2.35 ± 0.68	2.11 ± 0.81	−10.2	−9.4	−5.2	+4.0