Table 1. PM_2.5 site information.

Station	Longitude	Latitude	Station	Longitude	Latitude
Yangkou	120.67	36.24	Develop substation	120.47	36.39
Licang station	120.39	36.19	Jiaonan station	120.00	35.88
Shibei substation	120.35	36.07	Jiaozhou station	120.01	36.28
Shinan east station	120.41	36.07	Jiaozhou	120.02	36.25
Huangdao substation	120.20	36.96	Square substation	120.52	36.89
Sifang substation	120.37	36.10	Laoshan substation	120.46	36.09
Shinan west	120.30	36.01	Pingdu1	119.95	36.79
Lacey	120.54	36.87	Pingdu2	119.98	36.80
Chengyang substation	120.40	36.31	Jimo1	120.61	36.44
Huangdao district	120.04	35.87	Jimo2	120.50	36.40