Night Light of Langtoucun (Liaoning) from space (China) Src. Average luminocity for 10x10km area is 37.8101% and for 50x50km: 8.9594%.
Square area 10x10 km:
 0.65%
 1.46%
 10.88%
 5.19%
 8.12%
 6.49%
 3.9%
 8.44%
 19.97%
 30.03%
 4.87%Square area 50x50 km:
 0.69%
 0.74%
 1.71%
 0.95%
 1.3%
 2.05%
 1.05%
 2.43%
 2.67%
 6.08%
 80.33%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
40° 34' 36.7" North, 123° 37' 55.7" East
40° 2' 26.4" North, 124° 20' 6.9" East
39° 30' 0.9" North, 125° 2' 18.2" East
Some cities around Langtoucun sort by population:
• Dandong
		11.1 km =6.9 mi, 
27°
• Sinŭiju, KP
		8.5 km =5.3 mi, 
38°
• Fengcheng
		51.1 km =31.8 mi, 
334°
• Ŭiju, KP
		24.3 km =15.1 mi, 
43°
• Kusŏng, KP
		77.7 km =48.3 mi, 
94°
• Sakchu-ŭp, KP
		71.8 km =44.6 mi, 
57°
• Kwaksan, KP
		74.9 km =46.5 mi, 
121°
• Yŏmju-ŭp, KP
		27.7 km =17.2 mi, 
126°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016