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Table 2 Spearman's correlations between daily air pollutants and weather conditions in Beijing 2007

From: Gaseous air pollution and emergency hospital visits for hypertension in Beijing, China: a time-stratified case-crossover study

  PM10 SO2 NO2 Temperature
SO2 0.46a    
NO2 0.64a 0.65a   
Temperature 0.04 -0.68a -0.28a  
Humidity 0.28a -0.12a 0.25a 0.21a
  1. a P < 0.05