Night Light of Sertolovo (Leningradskaya Oblast') from space (Russia) Src. Average luminocity for 10x10km area is 59.7913% and for 50x50km: 33.0224%.
Square area 10x10 km:
 10.12%
 17.25%
 8.78%
 11.67%
 5.99%
 1.14%
 4.44%
 10.85%
 26.86%
 2.89%
 0%Square area 50x50 km:
 11.47%
 6.27%
 3.08%
 3.93%
 4.8%
 1.66%
 1.11%
 2.58%
 7.45%
 12.86%
 44.78%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
60° 29' 33.3" North, 29° 29' 54.7" East
60° 8' 39.8" North, 30° 12' 5.9" East
59° 47' 33" North, 30° 54' 17.2" East
Some cities around Sertolovo sort by population:
• Ozerki
		13.2 km =8.2 mi, 
152°
• Parnas
		11.6 km =7.2 mi, 
135°
• Kolomyagi
		14.1 km =8.8 mi, 
160°
• Pargolovo
		8.2 km =5.1 mi, 
149°
• Pesochnyy
		3.2 km =2 mi, 
221°
• Bugry
		13.3 km =8.3 mi, 
127°
• Shuvalovo
		11.8 km =7.3 mi, 
154°
• Agalatovo
		9.3 km =5.8 mi, 
25°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016