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Table 2 Spearman’s correlations between each atmospheric pollutants and meteorological factors in Beijing, 2013-2017b

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

Variables SO2 CO NO2 O3 PM10 PM2.5 Temp Humidity
SO2 1.000        
CO 0.6039 1.0000       
NO2 0.6552 0.7221 1.0000      
O3 −0.3621 − 0.4185 −0.4062 1.0000     
PM10 0.5715 0.5783 0.7005 −0.0304 1.0000    
PM2.5 0.5607 0.7246 0.7170 −0.1127 0.8417 1.0000   
Temp −0.4938 − 0.3407 − 0.3014 0.8102 − 0.0197 − 0.0588 1.0000  
Humidity −0.3893 0.0429 −0.0118 0.0108 −0.0279 0.0779 0.1052 1.0000
  1. b All correlation coefficients were statistically significant (P < 0.001)
  2. Temp: Temperature