Night Light of Priozërsk (Leningradskaya Oblast') from space (Russia) Src. Average luminocity for 10x10km area is 27.9708% and for 50x50km: 5.3024%.
Square area 10x10 km:
 3.9%
 3.57%
 3.25%
 3.03%
 9.63%
 4.11%
 0%
 0%
 8.33%
 28.25%
 35.93%Square area 50x50 km:
 0.2%
 0.3%
 0.23%
 0.27%
 0.83%
 1.48%
 3.41%
 0.58%
 0.34%
 2.79%
 89.59%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
61° 22' 40.5" North, 29° 25' 33.4" East
61° 2' 21.4" North, 30° 7' 44.7" East
60° 41' 49.2" North, 30° 49' 55.9" East
Some cities around Priozërsk sort by population:
• Imatra, FI
		75.4 km =46.9 mi, 
281°
• Sortavala
		81 km =50.3 mi, 
22°
• Svetogorsk
		68.6 km =42.6 mi, 
276°
• Vaskelovo
		72.6 km =45.1 mi, 
170°
• Lakhdenpokh’ya
		53.6 km =33.3 mi, 
4°
• Kamennogorsk
		54.5 km =33.9 mi, 
260°
• Sosnovo
		54.4 km =33.8 mi, 
175°
• Ruokolahti, FI
		74.6 km =46.4 mi, 
291°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016