Night Light of Qingguang (Tianjin) from space (China) Src. Average luminocity for 10x10km area is 67.4692% and for 50x50km: 51.1931%.
Square area 10x10 km:
 3.41%
 3.41% 5.52%
 5.52% 21.43%
 21.43% 17.69%
 17.69% 23.05%
 23.05% 12.34%
 12.34% 5.84%
 5.84% 5.68%
 5.68% 5.03%
 5.03% 0%
 0% 0%
 0%Square area 50x50 km:
 15.36%
 15.36% 9.31%
 9.31% 8.17%
 8.17% 6.43%
 6.43% 6.15%
 6.15% 5.07%
 5.07% 5.06%
 5.06% 6.26%
 6.26% 7.88%
 7.88% 9.76%
 9.76% 20.57%
 20.57%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
39° 44' 29.8" North, 116° 19' 48.1" East
39° 11' 55.8" North, 117° 1' 59.3" East
38° 39' 6.6" North, 117° 44' 10.6" East
Some cities around Qingguang sort by population:
• Tianjin
		13.9 km =8.6 mi,  116°
116°
• Yangliuqing
		7.4 km =4.6 mi,  202°
202°
• Yangcun
		18.5 km =11.5 mi,  7°
7°
• Beicang
		8.7 km =5.4 mi,  61°
61°
• Hanjiashu
		3.7 km =2.3 mi,  110°
110°
• Huantuo
		25.2 km =15.7 mi,  83°
83°
• Dabizhuang
		19.2 km =11.9 mi,  91°
91°
• Xiaodian
		17.8 km =11.1 mi,  69°
69°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016