Night Light of Valuyki (Belgorod Oblast) from space (Russia) Src. Average luminocity for 10x10km area is 16.4011% and for 50x50km: 0.9064%.
Square area 10x10 km:
 0.53%
 1.6%
 4.14%
 3.07%
 1.87%
 2.14%
 2.54%
 1.2%
 2.54%
 10.16%
 70.19%Square area 50x50 km:
 0.08%
 0.11%
 0.19%
 0.14%
 0.08%
 0.09%
 0.16%
 0.11%
 0.1%
 0.42%
 98.52%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
50° 39' 5.1" North, 37° 24' 12.9" East
50° 12' 12.6" North, 38° 6' 24.1" East
49° 45' 4.8" North, 38° 48' 35.4" East
Some cities around Valuyki sort by population:
• Alekseyevka
		63 km =39.1 mi, 
41°
• Kupjansk, UA
		65.1 km =40.5 mi, 
212°
• Novyy Oskol
		64.6 km =40.1 mi, 
344°
• Kivsharivka, UA
		70.4 km =43.7 mi, 
205°
• Volokonovka
		35.8 km =22.2 mi, 
330°
• Krasnogvardeyskoye
		53.8 km =33.4 mi, 
22°
• Veydelevka
		25 km =15.5 mi, 
103°
• Urazovo
		14.2 km =8.8 mi, 
199°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016