Markov Chain-Based Acute Effect Estimation of Air Pollution on Elder Asthma Hospitalization

Table 2

Pearson correlation coefficients between daily air pollutant concentrations from January 1, 2014, to December 31, 2014.

	PM2.5	PM10	SO2	NO2
PM2.5	1
PM10	0.86	1
SO2	0.51	0.53	1
NO2	0.55	0.56	0.47	1

Abbreviations are the same as in Table 1.