Night Light of Svetogorsk (Leningradskaya Oblast') from space (Russia) Src. Average luminocity for 10x10km area is 34.7554% and for 50x50km: 10.4154%.
Square area 10x10 km:
 7.14%
 6.93%
 3.35%
 5.19%
 4.98%
 1.41%
 0%
 4.76%
 15.15%
 26.73%
 24.35%Square area 50x50 km:
 1.25%
 1.71%
 0.87%
 1.08%
 2.3%
 1.84%
 0.94%
 1.18%
 2.73%
 7.4%
 78.69%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
61° 26' 60" North, 28° 9' 36.3" East
61° 6' 43.7" North, 28° 51' 47.6" East
60° 46' 14.2" North, 29° 33' 58.8" East
Some cities around Svetogorsk sort by population:
• Vyborg
		45.4 km =28.2 mi, 
187°
• Lappeenranta, FI
		36.7 km =22.8 mi, 
260°
• Imatra, FI
		8.9 km =5.5 mi, 
318°
• PriozĂ«rsk
		68.6 km =42.6 mi, 
96°
• Joutseno, FI
		19.1 km =11.9 mi, 
271°
• Sovetskiy
		64.5 km =40.1 mi, 
188°
• Kamennogorsk
		22.8 km =14.2 mi, 
140°
• Ruokolahti, FI
		19.1 km =11.9 mi, 
355°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016