Night Light of Pengcheng (Hebei) from space (China) Src. Average luminocity for 10x10km area is 33.7185% and for 50x50km: 10.7217%.
Square area 10x10 km:
 0.87%
 7.69%
 4.9%
 4.72%
 3.85%
 6.99%
 1.57%
 12.94%
 9.27%
 23.6%
 23.6%Square area 50x50 km:
 0.39%
 1.19%
 1.11%
 1.51%
 1.44%
 2.14%
 1.21%
 3.43%
 3.32%
 9.28%
 75%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
36° 59' 41.1" North, 113° 28' 0.8" East
36° 25' 52" North, 114° 10' 12" East
35° 51' 48" North, 114° 52' 23.3" East
Some cities around Pengcheng sort by population:
• Handan
		32.6 km =20.3 mi, 
54°
• Anyang
		41.9 km =26 mi, 
152°
• Xingtai
		76 km =47.2 mi, 
22°
• Hebi
		59.2 km =36.8 mi, 
178°
• Shahecheng
		63.9 km =39.7 mi, 
27°
• Linshui
		3.2 km =2 mi, 
102°
• Hecun
		12.5 km =7.8 mi, 
335°
• Yigou
		70.2 km =43.6 mi, 
169°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016