Night Light of Guozhen (Shaanxi) from space (China) Src. Average luminocity for 10x10km area is 40.8681% and for 50x50km: 10.0646%.
Square area 10x10 km:
 1.1%
 5.86%
 7.14%
 5.31%
 10.26%
 12.27%
 3.85%
 5.49%
 7.88%
 32.42%
 8.42%Square area 50x50 km:
 0.96%
 1.43%
 1.33%
 1.19%
 1.69%
 1.91%
 0.96%
 1.76%
 2.79%
 6.59%
 79.39%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
34° 56' 39.4" North, 106° 39' 21.3" East
34° 21' 57.3" North, 107° 21' 32.5" East
33° 47' 0.6" North, 108° 3' 43.8" East
Some cities around Guozhen sort by population:
• Xi’an
		144.6 km =89.9 mi, 
94°
• Tianshui
		150.1 km =93.3 mi, 
279°
• Xianyang
		123.4 km =76.7 mi, 
91°
• Hanzhong
		146.9 km =91.3 mi, 
192°
• Pingliang
		144.1 km =89.5 mi, 
334°
• Lintong
		169.8 km =105.5 mi, 
89°
• Beidao
		136.2 km =84.6 mi, 
279°
• Yuxia
		121.6 km =75.6 mi, 
106°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016