COVID-19 Lockdown Unravels the Complex Interplay between Environmental Conditions and Human Activity

Table 3

Main descriptive statistics of the data items divided by time groups as specified in Appendix B.

Variable	Average				Std. Deviation
	Group 1.1	Group 1.2	Group 2.1	Group 2.2	Group 1.1	Group 1.2	Group 2.1	Group 2.2
NO2 [mcg/m^2]	6367.59	3747.44	6891.16	2677.80	2822.47	1618.58	6853.91	1447.24
Surface pressure [Pa]	95227.33	94666.43	94729.76	94938.83	700.79	763.56	853.13	558.27
Surface net solar radiation [kJ/m^2]	5108.60	7817.19	4632.62	8142.56	1244.45	2144.71	1182.88	2335.69
Temperature-2m [K]	277.45	281.95	277.64	282.32	2.21	2.06	1.94	3.64
Total precipitation [mm]	0.42	2.35	0.92	1.20	1.19	3.82	2.11	2.15
Wind direction []	−48.73	−32.45	−51.94	−7.52	25.84	55.36	27.21	52.37
Wind speed [m/s]	1.06	1.03	1.04	0.95	0.53	0.50	0.57	0.55
Total load [MWh]	37.60	33.87	37.05	27.86	4.20	4.98	4.04	3.13
Retail and recreation [%]	—	—	−23.00	−85.98	—	—	22.08	6.19
Grocery and pharmacy [%]	—	—	−2.82	−50.23	—	—	11.85	15.82
Parks [%]	—	—	1.96	−77.31	—	—	32.62	10.52
Transit stations [%]	—	—	−30.21	−82.94	—	—	25.26	4.04
Workplaces [%]	—	—	−18.32	−67.63	—	—	16.04	7.79
Residential [%]	—	—	8.79	31.77	—	—	8.58	5.72
Driving [%]	—	—	−8.93	−80.25	—	—	33.33	5.08
Change in movement [%]	—	—	−27.09	−66.04	—	—	13.73	7.82