Night Light of Yilan (Heilongjiang) from space (China) Src. Average luminocity for 10x10km area is 6.561% and for 50x50km: 0.5152%.
Square area 10x10 km:
 0%
 0.15%
 0.45%
 0.6%
 1.04%
 1.93%
 2.98%
 3.27%
 1.79%
 0.3%
 87.5%Square area 50x50 km:
 0.02%
 0.05%
 0.02%
 0.06%
 0.08%
 0.1%
 0.13%
 0.2%
 0.25%
 0.02%
 99.07%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
46° 47' 58.8" North, 128° 51' 5.1" East
46° 18' 58.2" North, 129° 33' 16.4" East
45° 49' 42.2" North, 130° 15' 27.6" East
Some cities around Yilan sort by population:
• Jiamusi
		79.2 km =49.2 mi, 
47°
• Taihecun
		117.4 km =72.9 mi, 
121°
• Lianhe
		93.3 km =58 mi, 
346°
• Boli
		100.5 km =62.4 mi, 
128°
• Lingdong
		125 km =77.7 mi, 
77°
• Huanan
		75.3 km =46.8 mi, 
98°
• Shanhecun
		100.9 km =62.7 mi, 
228°
• Langxiang
		87.8 km =54.6 mi, 
323°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016