Night Light of Hegang (Heilongjiang) from space (China) Src. Average luminocity for 10x10km area is 23.5074% and for 50x50km: 2.09%.
Square area 10x10 km:
 2.98%
 3.72%
 1.49%
 2.08%
 4.76%
 2.68%
 4.61%
 5.21%
 5.36%
 17.71%
 49.4%Square area 50x50 km:
 0.15%
 0.26%
 0.12%
 0.17%
 0.41%
 0.32%
 0.41%
 0.44%
 0.52%
 1.94%
 95.26%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
47° 49' 31.4" North, 129° 35' 49.2" East
47° 21' 4.2" North, 130° 18' 0.4" East
46° 52' 21.6" North, 131° 0' 11.7" East
Some cities around Hegang sort by population:
• Shuangyashan
		102.5 km =63.7 mi, 
140°
• Jiamusi
		61.4 km =38.2 mi, 
178°
• Yichun
		114.6 km =71.2 mi, 
291°
• Lianhe
		81.1 km =50.4 mi, 
252°
• Lingdong
		108.2 km =67.2 mi, 
143°
• Fuli
		94.6 km =58.8 mi, 
137°
• Fengxiang
		46.6 km =29 mi, 
57°
• Amurzet, RU
		70.9 km =44.1 mi, 
57°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016