The impact of outdoor air pollutants on outpatient visits for respiratory diseases during 2012–2016 in Jinan, China

Table 2 Spearman correlation coefficients between air pollutants and meteorological parameters in Jinan, China, 2012–2016

	PM_2.5	PM₁₀	SO₂	NO₂	CO	O₃	Temperature	Humidity	Pressure	Wind speed
PM_2.5	1	0.863^**	0.606^**	0.642^**	0.781^**	−0.182^**	−0.269^**	0.131^**	0.238^**	−0.236^**
PM₁₀		1	0.613^**	0.683^**	0.670^**	−0.125^**	−0.235^**	−0.116^**	0.223^**	−0.127^**
SO₂			1	0.702^**	0.674^**	− 0.344^**	− 0.588^**	− 0.293^**	0.532^**	− 0.036
NO₂				1	0.782^**	−0.459^**	−0.524^**	− 0.069^**	0.557^**	− 0.391^**
CO					1	−0.435^**	−0.455^**	0.172^**	0.414^**	−0.385^**
O₃						1	0.794^**	−0.099^**	− 0.679^**	0.199^**
Temperature							1	0.179^**	−0.885^**	0.067^**
Humidity								1	−0.239^**	−0.354^**
Pressure									1	−0.119^**
Wind speed										1

ISSN: 1465-993X