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Table 2 Pearson correlation coefficients between air pollution concentrations and weather conditions in Beijing, 2013–2017

From: Effects of ambient carbon monoxide on daily hospitalizations for cardiovascular disease: a time-stratified case-crossover study of 460,938 cases in Beijing, China from 2013 to 2017

 

CO

PM2.5

SO2

NO2

O3

Temperature

Relative humidity

CO

1.000

      

PM2.5

0.830*

1.000

     

SO2

0.670*

0.562*

1.000

    

NO2

0.820*

0.786*

0.633*

1.000

   

O3

−0.379*

− 0.149*

− 0.338*

− 0.383*

1.000

  

Temperature

−0.398*

− 0.183*

− 0.488*

− 0.354*

0.768*

1.000

 

Relative humidity

−0.028

−0.015

− 0.277*

− 0.017

0.029

0.135*

1.000

Air pressure

0.246*

0.061*

0.316*

0.221*

− 0.691*

− 0.875*

− 0.090*

  1. * P < 0.001
  2. CO carbon monoxide, PM2.5 particulate matter with aerodynamic diameter less than 2.5 μm, SO2 sulfur dioxide, NO2 nitrogen dioxide, O3 ozone
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Environmental Health

ISSN: 1476-069X