Night Light of Yuncheng (Shanxi) from space (China) Src. Average luminocity for 10x10km area is 63.6801% and for 50x50km: 9.5093%.
Square area 10x10 km:
 13.46%
 17.31%
 11.19%
 8.22%
 8.22%
 4.72%
 6.29%
 7.17%
 14.16%
 8.57%
 0.7%Square area 50x50 km:
 0.69%
 1.52%
 1.61%
 1.3%
 1.57%
 1.03%
 1.11%
 1.63%
 2.74%
 6.55%
 80.25%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
35° 35' 48.6" North, 110° 17' 22.8" East
35° 1' 23" North, 110° 59' 34" East
34° 26' 42.8" North, 111° 41' 45.3" East
Some cities around Yuncheng sort by population:
• Luoyang
		138.5 km =86.1 mi, 
105°
• Changzhi
		70.9 km =44.1 mi, 
73°
• Huayin
		98.7 km =61.3 mi, 
238°
• Linfen
		127.7 km =79.3 mi, 
21°
• Weinan
		147.3 km =91.5 mi, 
246°
• Yima
		87.2 km =54.2 mi, 
111°
• Yanliang
		165.9 km =103.1 mi, 
255°
• Hancheng
		70.6 km =43.9 mi, 
313°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016