Backward Trajectory and Multifractal Analysis of Air Pollution in Zhengzhou Region of China

Table 1

Total observation stations located in the five cities.

Zhengzhou	Shijiazhuang	Jinan	Zibo	Luoyang
Tobacco Factory	Staff Hospital	Cadre Reset Institute	People’s Park	No. 2 Primary School
Textile Machinery Factory	High Tech Zone	Agricultural Scientific Institute	Dongfeng Chemical Plant	Municipal Party School
Banking College	Northwest Water Source	Development Zone	Shuangshan	Yuxi Hotel
Water Supply Company	Southwest Higher Education	Chemical Factory	Weather Station	Henan Forestry School
Management Committee of Economic Development Zone	Century Park	Seed Stocks	Putian Garden	Management Committee of Development Zone
No. 47 Middle School	People's Hall	Machine Tool Plant	Sanjin Group	New Office Area of Municipal Party Committee
Municipal Monitoring Station	Fenglong Mountain	Municipal Monitoring Station		Kaixuan Road Primary School
Gangli Reservoir	South-School Area of No.22 Middle School	Changqing Party School
Gangli Reservoir (Reference Site)		Technical College
		Taixing Company
		Laiwu Campaign Memorial Hall