Table 3.

The correlations between sunlight UV radiation dose and infectiousness of COVID-19 during the early transmission.

	Generation interval	Spearman rank correlation		Kendall rank correlation
		rs	p	τ	p
US	Δg = 5	−0.506⁎	0.012	−0.333⁎	0.022
	Δg = 6	−0.6⁎⁎	0.002	−0.42⁎⁎	0.004
	Δg = 7	−0.612⁎⁎	0.001	−0.42⁎⁎	0.004

p significance level of the two-tailed test.

^⁎⁎Correlation is significant at the 0.01 level.

^⁎Correlation is significant at the 0.05 level.