Night Light of Ankang (Shaanxi) from space (China) Src. Average luminocity for 10x10km area is 39.1311% and for 50x50km: 2.5883%.
Square area 10x10 km:
 4.37%
 6.12%
 6.29%
 5.07%
 8.39%
 9.09%
 6.29%
 3.5%
 3.5%
 24.3%
 23.08%Square area 50x50 km:
 0.2%
 0.3%
 0.27%
 0.24%
 0.5%
 0.56%
 0.42%
 0.34%
 0.38%
 2.57%
 94.21%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
33° 16' 11.5" North, 108° 18' 50.8" East
32° 40' 48" North, 109° 1' 2" East
32° 5' 10.4" North, 109° 43' 13.3" East
Some cities around Ankang sort by population:
• Xi’an
		175.7 km =109.2 mi, 
357°
• Shiyan
		164.9 km =102.5 mi, 
91°
• Xianyang
		186.6 km =115.9 mi, 
351°
• Wanxian
		216.1 km =134.3 mi, 
196°
• Weinan
		207.8 km =129.1 mi, 
12°
• Hanzhong
		191.4 km =118.9 mi, 
283°
• Lintong
		189.6 km =117.8 mi, 
5°
• Yuxia
		157.8 km =98.1 mi, 
346°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016