Fig. 3

Maps of local spatial autocorrelation cluster of PTB for each county in Jilin province from 2008 to 2018 by ArcMap software. Only those counties whose local Moran’s I have reached the significance level of 0.05 will be present on the map.

Maps of local spatial autocorrelation cluster of PTB for each county in Jilin province from 2008 to 2018 by ArcMap software. Only those counties whose local Moran’s I have reached the significance level of 0.05 will be present on the map.