The effects of ambient temperature on cerebrovascular mortality: an epidemiologic study in four climatic zones in China

Table 2 Spearman’s correlations between daily weather and air pollutants in five Chinese cities from 2004 to 2008

City	Variable	Temperature	Relative humidity	PM₁₀
Beijing	Relative humidity	0.35**
	PM₁₀	0.00	0.17**
	NO₂	−0.17**	0.21**	0.67**
Tianjin	Relative humidity	0.30**
	PM₁₀	−0.07*	0.06*
	NO₂	−0.36**	0.08*	0.59**
Shanghai	Relative humidity	0.15**
	PM₁₀	−0.18**	−0.26**
	NO₂	−0.39**	−0.16**	0.73**
Wuhan	Relative humidity	−0.09*
	PM₁₀	−0.20**	−0.17**
	NO₂	−0.35**	−0.17**	0.76**
Guangzhou	Relative humidity	0.22**
	PM₁₀	−0.08*	−0.15**
	NO₂	−0.20**	−0.11**	0.88**

ISSN: 1476-069X