Night Light of Changtu (Liaoning) from space (China) Src. Average luminocity for 10x10km area is 8.0106% and for 50x50km: 1.2789%.
Square area 10x10 km:
 0%
 0%
 0%
 2.73%
 0.91%
 2.12%
 1.67%
 4.39%
 1.52%
 0%
 86.67%Square area 50x50 km:
 0.01%
 0.06%
 0.02%
 0.26%
 0.16%
 0.36%
 0.26%
 0.49%
 0.28%
 1.03%
 97.08%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
43° 17' 34" North, 123° 23' 32.4" East
42° 46' 43.8" North, 124° 5' 43.6" East
42° 15' 38.2" North, 124° 47' 54.9" East
Some cities around Changtu sort by population:
• Siping
		48.3 km =30 mi, 
28°
• Liaoyuan
		85.9 km =53.4 mi, 
80°
• Tieling
		57.9 km =36 mi, 
201°
• Gongzhuling
		99.5 km =61.8 mi, 
36°
• Kaiyuan
		27.7 km =17.2 mi, 
189°
• Zhengjiatun
		94 km =58.4 mi, 
329°
• Lishu
		61.4 km =38.2 mi, 
17°
• Xifeng
		51.4 km =31.9 mi, 
95°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016