Short-Term Prediction of Air Pollution in Macau Using Support Vector Machines

Table 2

Pearson correlation coefficients between pollutants in different time series.

	Pollutant
	SPM	SO2	NO2	O3
Lag 0	1.00	1.00	1.00	1.00
Lag 1	0.76	0.68	0.76	0.78
Lag 2	0.59	0.53	0.64	0.60
Lag 3	0.51	0.47	0.61	0.51
Lag 4	0.46	0.42	0.57	0.45
Lag 5	0.47	0.41	0.55	0.40