Night Light of Chaihe (Heilongjiang) from space (China) Src. Average luminocity for 10x10km area is 4.5894% and for 50x50km: 4.9722%.
Square area 10x10 km:
 0%
 1.21%
 1.21%
 0%
 0%
 0.76%
 1.06%
 2.42%
 0%
 0%
 93.33%Square area 50x50 km:
 0.94%
 1.29%
 0.47%
 0.34%
 0.62%
 0.61%
 0.68%
 0.62%
 1.03%
 2.42%
 91%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
45° 15' 24.9" North, 128° 58' 30.5" East
44° 45' 35.3" North, 129° 40' 41.7" East
44° 15' 30.2" North, 130° 22' 53" East
Some cities around Chaihe sort by population:
• Mudanjiang
		20.6 km =12.8 mi, 
197°
• Jixi
		117.1 km =72.8 mi, 
59°
• Fendou
		108.6 km =67.5 mi, 
62°
• Dongxing
		109.8 km =68.2 mi, 
52°
• Hailin
		31.2 km =19.4 mi, 
227°
• Linkou
		74.3 km =46.2 mi, 
38°
• Bamiantong
		68.6 km =42.6 mi, 
75°
• Jidong
		121.6 km =75.6 mi, 
65°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016