Night Light of Xiditou (Tianjin) from space (China) Src. Average luminocity for 10x10km area is 55.1156% and for 50x50km: 51.3148%.
Square area 10x10 km:
 0.34%
 0.34% 1.87%
 1.87% 17.18%
 17.18% 9.01%
 9.01% 11.73%
 11.73% 15.65%
 15.65% 19.39%
 19.39% 13.78%
 13.78% 8.33%
 8.33% 2.72%
 2.72% 0%
 0%Square area 50x50 km:
 17.54%
 17.54% 10.94%
 10.94% 7.54%
 7.54% 7.82%
 7.82% 5.56%
 5.56% 3.72%
 3.72% 3.86%
 3.86% 3.24%
 3.24% 3.93%
 3.93% 5.71%
 5.71% 30.13%
 30.13%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
39° 47' 46" North, 116° 38' 42.1" East
39° 15' 13.5" North, 117° 20' 53.3" East
38° 42' 25.8" North, 118° 3' 4.6" East
Some cities around Xiditou sort by population:
• Chitu
		7.3 km =4.5 mi,  139°
139°
• Zaojiacheng
		8 km =5 mi,  71°
71°
• Huantuo
		3.7 km =2.3 mi,  214°
214°
• Fanzhuang
		6.8 km =4.2 mi,  189°
189°
• Dongditou
		2.5 km =1.6 mi,  56°
56°
• Dabizhuang
		10.4 km =6.5 mi,  229°
229°
• Liukuaizhuang
		1 km =0.6 mi,  229°
229°
• Xiaodian
		10.4 km =6.5 mi,  270°
270°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016