Night Light of Hyesan (Yanggang-do) from space (North Korea) Src. Average luminocity for 10x10km area is 3.2347% and for 50x50km: 0.1245%.
Square area 10x10 km:
 0%
 0%
 0.68%
 0%
 1.36%
 0%
 0.68%
 2.21%
 1.19%
 0.85%
 93.03%Square area 50x50 km:
 0%
 0%
 0.03%
 0%
 0.05%
 0%
 0.03%
 0.08%
 0.05%
 0.03%
 99.73%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 55' 37" North, 127° 28' 28.8" East
41° 24' 6" North, 128° 10' 40" East
40° 52' 19.6" North, 128° 52' 51.3" East
Some cities around Hyesan sort by population:
• Linjiang, CN
		114.8 km =71.3 mi, 
293°
• Songjianghe, CN
		104.7 km =65.1 mi, 
326°
• Kilju
		107.8 km =67 mi, 
116°
• Kyŏngsŏng
		120.7 km =75 mi, 
80°
• Kapsan-ŭp
		35.9 km =22.3 mi, 
164°
• Hau-ri
		110.3 km =68.5 mi, 
101°
• Sŭngjibaegam
		54.8 km =34.1 mi, 
108°
• Hoemul-li
		124.5 km =77.4 mi, 
88°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016