Night Light of Tonghua (Jilin) from space (China) Src. Average luminocity for 10x10km area is 21.6656% and for 50x50km: 1.6212%.
Square area 10x10 km:
 0%
 2.92%
 2.27%
 1.3%
 4.71%
 8.28%
 3.73%
 4.38%
 3.25%
 14.29%
 54.87%Square area 50x50 km:
 0%
 0.13%
 0.13%
 0.14%
 0.23%
 0.56%
 0.3%
 0.55%
 0.47%
 0.75%
 96.75%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
42° 14' 32.6" North, 125° 13' 23.8" East
41° 43' 11" North, 125° 55' 35" East
41° 11' 33.9" North, 126° 37' 46.3" East
Some cities around Tonghua sort by population:
• Baishan
		47.6 km =29.6 mi, 
59°
• Manp’o, KP
		69.7 km =43.3 mi, 
154°
• Linjiang
		82 km =51 mi, 
83°
• Liuhe
		60.4 km =37.5 mi, 
343°
• Sanchazi
		68.8 km =42.8 mi, 
54°
• Huanren
		68.8 km =42.8 mi, 
222°
• Erdaojiang
		10.8 km =6.7 mi, 
54°
• Chasŏng, KP
		66.1 km =41.1 mi, 
115°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016