Table 2.

Spearman correlations between the numbers of DNCCs of COVID-19 and meteorological factors

Meteorological factor	Country
	Portugal	Greece	Egypt	South Africa	Paraguay	Uruguay	South Korea	Japan
Temperature	− 0.63*	− 0.57*	− 0.28*	− 0.26*	− 0.23*	0.17*	− 0.45*	− 0.52*
Precipitation	0.3*	0.04	− 0.21*	− 0.11*	− 0.01	− 0.05	− 0.21*	− 0.25*
Relative humidity	0.58*	− 0.05	− 0.21*	0.15*	0.29*	0.13*	− 0.24*	− 0.39*
UV index	− 0.77*	− 0.41*	− 0.12*	− 0.19*	− 0.01	0.07	− 0.18*	− 0.38*
NO2 total column	− 0.43*	− 0.18*	0.02	0.02	− 0.49*	− 0.09	0.35*	0.31*
UV aerosol index	0.36*	0.19*	0.13*	0.02	− 0.24*	− 0.26*	0.23*	0.33*

*P < 0.05