Prediction of PM_2.5 in an Urban Area of Northern Thailand Using Multivariate Linear Regression Model

Table 3

Pearson correlation between PM_2.5 and various parameters.

Variables	Chiang Mai	Lampang	Nan
Temp	0.06	−0.17	0.18
RH	−0.46	−0.25	−0.57
AOD	0.48	0.47	0.53
WSPD	0.02	−0.17	−0.06
NO2	0.48	0.56	0.44
SO2	0.35	0.39	0.01
O3	0.30	0.27	0.32
CO	0.58	0.76	0.34