Night Light of Ozersk (Chelyabinsk) from space (Russia) Src. Average luminocity for 10x10km area is 19.9486% and for 50x50km: 3.1379%.
Square area 10x10 km:
 4.31%
 3.83%
 0.84%
 2.39%
 0.84%
 1.79%
 1.2%
 1.67%
 1.08%
 34.45%
 47.61%Square area 50x50 km:
 0.66%
 0.63%
 0.18%
 0.22%
 0.25%
 0.29%
 0.23%
 0.16%
 0.29%
 3.3%
 93.78%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
56° 8' 57.2" North, 59° 59' 58.8" East
55° 45' 20" North, 60° 42' 10" East
55° 21' 28.4" North, 61° 24' 21.3" East
Some cities around Ozersk sort by population:
• Snezhinsk
		36.7 km =22.8 mi, 
2°
• Kyshtym
		10.5 km =6.5 mi, 
243°
• Verkhniy Ufaley
		44.1 km =27.4 mi, 
319°
• Kasli
		15.5 km =9.6 mi, 
13°
• Karabash
		43.2 km =26.8 mi, 
225°
• Argayash
		31.6 km =19.6 mi, 
159°
• Novogornyy
		15 km =9.3 mi, 
158°
• Vishnëvogorsk
		26.4 km =16.4 mi, 
353°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016