Night Light of Songjianghe (Jilin) from space (China) Src. Average luminocity for 10x10km area is 9.4788% and for 50x50km: 0.8627%.
Square area 10x10 km:
 0%
 1.21%
 1.36%
 1.67%
 1.06%
 3.48%
 0.3%
 3.03%
 2.12%
 1.82%
 83.94%Square area 50x50 km:
 0.03%
 0.1%
 0.16%
 0.1%
 0.06%
 0.25%
 0.08%
 0.24%
 0.13%
 0.11%
 98.74%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
42° 42' 17.1" North, 126° 46' 33" East
42° 11' 9.2" North, 127° 28' 44.2" East
41° 39' 45.9" North, 128° 10' 55.5" East
Some cities around Songjianghe sort by population:
• Hyesan, KP
		104.7 km =65.1 mi, 
146°
• Baishan
		91.7 km =57 mi, 
252°
• Huadian
		105.1 km =65.3 mi, 
325°
• Hyesan-dong, KP
		105.1 km =65.3 mi, 
146°
• Linjiang
		63.3 km =39.3 mi, 
228°
• Sanchazi
		73.4 km =45.6 mi, 
260°
• Hepingjie
		48.5 km =30.1 mi, 
253°
• Chasŏng, KP
		106.4 km =66.1 mi, 
220°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016