Table 3.

Geographic detector results for PM_2.5 for BTH from 2013–2018.

Detection Indices (X)	2013	2014	2015	2016	2017
Sown Area of Farm Crops (X1)	0.6	0.6	0.5	0.4	0.5
Urban Green Area (X2)	0.8	0.4	0.6	0.8	0.7
Gross Domestic Product (X3)	0.2	0.2	0.3	0.2	0.4
Gross Domestic Product of Secondary Industry (X4)	0.4	0.3	0.4	0.4	0.3
Completed Floor Space (X5)	0.8	0.6	0.7	0.8	0.7
Population Density (X6)	0.7	0.6	0.7	0.7	0.6
Car Ownership (X7)	0.02	0.02	0.02	0.01	0.01
Average Wind Speed (X8)	0.3	0.2	0.1	0.1	0.01
Relative Humidity (X9)	0.4	0.4	0.4	0.3	0.4
Precipitation (X10)	0.5	0.6	0.2	0.01	0.6