Night Light of Helong (Jilin) from space (China) Src. Average luminocity for 10x10km area is 11.8683% and for 50x50km: 0.5068%.
Square area 10x10 km:
 1.59%
 2.22%
 0.63%
 0.95%
 2.54%
 1.43%
 0.79%
 3.65%
 0.79%
 1.43%
 83.97%Square area 50x50 km:
 0.06%
 0.09%
 0.03%
 0.04%
 0.1%
 0.08%
 0.03%
 0.14%
 0.03%
 0.08%
 99.32%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
43° 3' 20.4" North, 128° 17' 38.8" East
42° 32' 23.1" North, 128° 59' 50" East
42° 1' 10.3" North, 129° 42' 1.3" East
Some cities around Helong sort by population:
• Yanji
		58.4 km =36.3 mi, 
45°
• Longjing
		43.3 km =26.9 mi, 
53°
• Tumen
		83.7 km =52 mi, 
55°
• Mingyue
		63.4 km =39.4 mi, 
354°
• Hoeryŏng, KP
		62.4 km =38.8 mi, 
100°
• Musan-ŭp, KP
		38.9 km =24.2 mi, 
153°
• Puryŏng, KP
		79.3 km =49.3 mi, 
132°
• Komusan Il-tong, KP
		75 km =46.6 mi, 
129°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016