Night Light of Changping (Beijing) from space (China) Src. Average luminocity for 10x10km area is 71.5373% and for 50x50km: 34.6817%.
Square area 10x10 km:
 11.85%
 11.85% 13.96%
 13.96% 12.18%
 12.18% 18.34%
 18.34% 19.32%
 19.32% 7.31%
 7.31% 6.49%
 6.49% 3.57%
 3.57% 6.49%
 6.49% 0.49%
 0.49% 0%
 0%Square area 50x50 km:
 7.17%
 7.17% 6.18%
 6.18% 6.14%
 6.14% 7.1%
 7.1% 6.38%
 6.38% 4.71%
 4.71% 2.81%
 2.81% 2.63%
 2.63% 3.42%
 3.42% 6.32%
 6.32% 47.15%
 47.15%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
40° 45' 3.3" North, 115° 31' 53.7" East
40° 12' 58" North, 116° 14' 5" East
39° 40' 37.5" North, 116° 56' 16.2" East
Some cities around Changping sort by population:
• Beijing
		37 km =23 mi,  158°
158°
• Langfang
		87.8 km =54.6 mi,  153°
153°
• Mentougou
		33.2 km =20.6 mi,  201°
201°
• Tongzhou
		50.3 km =31.3 mi,  133°
133°
• Shunyi
		36.6 km =22.7 mi,  106°
106°
• Daxing
		53.5 km =33.2 mi,  171°
171°
• Fangshan
		62.2 km =38.6 mi,  199°
199°
• Liangxiang
		54.1 km =33.6 mi,  189°
189°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016