TABLE II. Station Characteristics of Different Sub-Areas.

ID (sub-areas)	Area type	Radius (km)	of stations
1	Remote suburb		300
2	Industrial area		500
3	Forest park area	[0.8,2]	100
4	Science and technology park	[0.3,0.5]	500
5	Forest park area	[0.8,2]	100
6	Urban area	[0.3,0.5]	300
7	Remote suburb		200
8	Urban area	[0.3,0.5]	500
9	Park area	[0.5,1]	50
10	Urban area	[0.3,0.5]	500
11	Urban area	[0.3,0.5]	500
12	Urban area	[0.3,0.5]	500
13	Remote suburb		300