Night Light of Gubkin (Belgorod Oblast) from space (Russia) Src. Average luminocity for 10x10km area is 19.2605% and for 50x50km: 5.5373%.
Square area 10x10 km:
 1.96%
 3.08%
 1.26%
 2.66%
 3.36%
 1.68%
 2.1%
 3.22%
 2.1%
 25.07%
 53.5%Square area 50x50 km:
 0.77%
 0.96%
 0.43%
 0.58%
 0.84%
 0.52%
 0.51%
 0.96%
 2.3%
 5%
 87.13%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
51° 43' 9.7" North, 36° 50' 33.8" East
51° 16' 54" North, 37° 32' 45" East
50° 50' 23.1" North, 38° 14' 56.3" East
Some cities around Gubkin sort by population:
• Staryy Oskol
		20.6 km =12.8 mi, 
85°
• Novyy Oskol
		61.8 km =38.4 mi, 
158°
• Chernyanka
		42 km =26.1 mi, 
154°
• Prokhorovka
		62.9 km =39.1 mi, 
244°
• Gorshechnoye
		43.4 km =27 mi, 
51°
• Troitskiy
		8.7 km =5.4 mi, 
350°
• Korocha
		57.8 km =35.9 mi, 
205°
• Pristen’
		59.4 km =36.9 mi, 
265°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016