Night Light of Dawangtai (Tianjin) from space (China) Src. Average luminocity for 10x10km area is 12.733% and for 50x50km: 38.1252%.
Square area 10x10 km:
 0.34%
 0.34% 0.34%
 0.34% 0%
 0% 1.36%
 1.36% 0.68%
 0.68% 1.36%
 1.36% 2.89%
 2.89% 5.44%
 5.44% 6.46%
 6.46% 15.65%
 15.65% 65.48%
 65.48%Square area 50x50 km:
 11.01%
 11.01% 7.18%
 7.18% 5.25%
 5.25% 5.51%
 5.51% 4.65%
 4.65% 3.77%
 3.77% 4.54%
 4.54% 4.39%
 4.39% 4.57%
 4.57% 7.45%
 7.45% 41.69%
 41.69%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
39° 49' 2" North, 116° 46' 54.8" East
39° 16' 30.1" North, 117° 29' 6.1" East
38° 43' 43.1" North, 118° 11' 17.3" East
Some cities around Dawangtai sort by population:
• Chitu
		10.7 km =6.6 mi,  221°
221°
• Beihuaidian
		7 km =4.3 mi,  105°
105°
• Biaokou
		8.1 km =5 mi,  46°
46°
• Zaojiacheng
		4.2 km =2.6 mi,  273°
273°
• Dongditou
		9.7 km =6 mi,  264°
264°
• Xitangtuo
		5.3 km =3.3 mi,  2°
2°
• Xiditou
		12 km =7.5 mi,  258°
258°
• Liukuaizhuang
		12.9 km =8 mi,  256°
256°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016