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Table 2 Spearman correlations of daily pollutant concentrations in the study period during 2014–2017

From: Ambient particulate matter and biomass burning: an ecological time series study of respiratory and cardiovascular hospital visits in northern Thailand

  PM10 NO2 O3 CO
NO2 0.71   
O3 0.82 0.58  
CO 0.57 0.50 0.45