Night Light of Gannan (Heilongjiang) from space (China) Src. Average luminocity for 10x10km area is 10.4716% and for 50x50km: 0.7449%.
Square area 10x10 km:
 1.56%
 2.41%
 1.14%
 1.14%
 1.14%
 1.14%
 1.28%
 0.14%
 0%
 0.71%
 89.35%Square area 50x50 km:
 0.06%
 0.1%
 0.05%
 0.11%
 0.16%
 0.13%
 0.09%
 0.06%
 0.22%
 0.1%
 98.92%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
48° 23' 1.8" North, 122° 47' 59.8" East
47° 54' 53" North, 123° 30' 11" East
47° 26' 28.7" North, 124° 12' 22.3" East
Some cities around Gannan sort by population:
• Qiqihar
		72.4 km =45 mi, 
151°
• Hulan Ergi
		79.6 km =49.5 mi, 
172°
• Zhalantun
		58 km =36 mi, 
280°
• Nehe
		117.1 km =72.8 mi, 
57°
• Longjiang
		69.3 km =43.1 mi, 
200°
• Fuyu
		72.4 km =45 mi, 
100°
• Nianzishan
		64.1 km =39.8 mi, 
226°
• Taikang
		136.8 km =85 mi, 
148°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016