Acute effects of fine particulate matter (PM2.5) on hospital admissions for cardiovascular diseases in Lanzhou, China: a time-series study

Environmental Sciences Europe

Table 2 The coefficient of Spearman rank correlation between daily air pollutants and weather conditions in Lanzhou, 2014–2019

	PM_2.5	PM₁₀	SO₂	NO₂	O₃8h	CO	Temperature	Relative humidity
PM_2.5	1.000	0.86^*	0.67^*	0.47^*	− 0.32^*	0.72^*	− 0.45^*	− 0.08^*
PM₁₀		1.000	0.60^*	0.46^*	− 0.14^*	0.58^*	− 0.32^*	− 0.32^*
SO₂			1.000	0.51^*	− 0.38^*	0.81^*	− 0.57^*	− 0.19^*
NO₂				1.000	0.05^*	0.58^*	− 0.22^*	− 0.11^*
O₃8h					1.000	− 0.38^*	0.64^*	− 0.23^*
CO						1.000	− 0.48^*	0.01
Temperature							1.000	0.026
Relative humidity								1.000