Night Light of Huayin (Shaanxi) from space (China) Src. Average luminocity for 10x10km area is 27.0997% and for 50x50km: 3.3786%.
Square area 10x10 km:
 1.22%
 2.62%
 4.72%
 3.32%
 6.82%
 5.07%
 4.02%
 8.57%
 1.57%
 20.98%
 41.08%Square area 50x50 km:
 0.07%
 0.22%
 0.36%
 0.32%
 0.78%
 0.66%
 0.41%
 1.06%
 0.64%
 1.61%
 93.88%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
35° 8' 32.2" North, 109° 21' 47.8" East
34° 33' 55" North, 110° 3' 59" East
33° 59' 3.3" North, 110° 46' 10.3" East
Some cities around Huayin sort by population:
• Xi’an
		109.8 km =68.2 mi, 
251°
• Xianyang
		127.6 km =79.3 mi, 
258°
• Tongchuanshi
		106 km =65.9 mi, 
302°
• Yuncheng
		98.7 km =61.3 mi, 
58°
• Weinan
		51.5 km =32 mi, 
262°
• Lintong
		81.3 km =50.5 mi, 
255°
• Yanliang
		77.3 km =48 mi, 
277°
• Hancheng
		104.9 km =65.2 mi, 
18°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016