Night Light of Huanan (Heilongjiang) from space (China) Src. Average luminocity for 10x10km area is 4.9986% and for 50x50km: 0.2498%.
Square area 10x10 km:
 0.14%
 0.43%
 0%
 0.14%
 0.99%
 2.98%
 1.56%
 0.99%
 1.56%
 0%
 91.19%Square area 50x50 km:
 0.01%
 0.02%
 0%
 0.01%
 0.05%
 0.14%
 0.07%
 0.07%
 0.07%
 0%
 99.57%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
46° 42' 18.1" North, 129° 49' 18.8" East
46° 13' 14.5" North, 130° 31' 30" East
45° 43' 55.4" North, 131° 13' 41.3" East
Some cities around Huanan sort by population:
• Shuangyashan
		66.8 km =41.5 mi, 
46°
• Jiamusi
		66.3 km =41.2 mi, 
346°
• Taihecun
		56.7 km =35.2 mi, 
153°
• Baoshan
		78.5 km =48.8 mi, 
61°
• Boli
		52.2 km =32.4 mi, 
175°
• Lingdong
		61.2 km =38 mi, 
51°
• Yilan
		75.3 km =46.8 mi, 
278°
• Fuli
		72.9 km =45.3 mi, 
40°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016