Environmental Sciences Europe

Table 2 Pearson’s bivariate correlations between daily mean concentrations of NO₂ and PM₁₀; daily maximum temperature (Tmax) and absolute humidity (AH)

From: Short-term associations of air pollution and meteorological variables on the incidence and severity of COVID-19 in Madrid (Spain): a time series study

	NO₂	PM₁₀	Tmax	AH
NO₂	1	0.519**	− 0.143	− 0.527**
PM₁₀	0.519**	1	0.019	− 0.182*
Tmax	− 0.143	0.019	1	0.569**
AH	− 0.527**	− 0.182	0.569**	1

^** Significance p < 0.001; * significance p < 0.05

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