Table 1.

Summary of total confirmed COVID-19 cases, meteorological data, and air pollutants of 120 Chinese cities

Variables	Min	P25	P50	P75	Max
Confirmed case counts	5	14	36	81	3518
Concentrations of air pollutants
CO (mg/m3)	0.42	0.69	0.82	0.98	1.67
NO2 (μg/m3) ⁎	5.06	16.65	20.89	28.06	44.01
SO2 (μg/m3)	2.70	5.92	8.23	13.83	41.74
O3 (μg/m3) ⁎	29.63	48.42	56.38	62.66	85.94
PM2.5 (μg/m3)	13.62	30.75	43.58	59.54	94.83
Meteorological factors
RH (%)	35.42	62.43	73.71	79.28	85.50
AT (°C)	−12.48	2.10	8.14	10.77	21.29
PRE (mm)	0.00	0.36	0.95	2.64	6.82
AP (hPa)	758.41	978.83	1008.22	1016.43	1024.43
HS(h)	1.60	3.31	4.48	6.91	9.20
WV (m/s) ⁎	1.00	1.78	2.19	2.57	5.05
DTR (°C)	5.13	6.73	8.92	10.90	18.37
MSI	0.01	0.02	0.13	0.37	5.13

^⁎The data were normal distribution by normal distribution test