Night Light of Aleksin (Tula) from space (Russia) Src. Average luminocity for 10x10km area is 27.2165% and for 50x50km: 1.5049%.
Square area 10x10 km:
 1.32%
 3.95%
 4.07%
 6.7%
 3.95%
 3.71%
 2.39%
 2.63%
 2.63%
 35.17%
 33.49%Square area 50x50 km:
 0.06%
 0.18%
 0.17%
 0.32%
 0.2%
 0.2%
 0.22%
 0.23%
 0.23%
 1.55%
 96.62%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
54° 54' 40.5" North, 36° 21' 51.4" East
54° 30' 18.1" North, 37° 4' 2.6" East
54° 5' 41" North, 37° 46' 13.9" East
Some cities around Aleksin sort by population:
• Protvino
		41.5 km =25.8 mi, 
13°
• Yasnogorsk
		40.8 km =25.4 mi, 
93°
• Kremenki
		42.5 km =26.4 mi, 
4°
• Tarusa
		25.3 km =15.7 mi, 
15°
• Leninskiy
		35 km =21.7 mi, 
133°
• Zaokskiy
		33.3 km =20.7 mi, 
40°
• Rozhdestvenskiy
		40 km =24.9 mi, 
125°
• Dubna
		39.6 km =24.6 mi, 
189°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016