Night Light of Porkhov (Pskov Oblast) from space (Russia) Src. Average luminocity for 10x10km area is 2.6977% and for 50x50km: 0.1715%.
Square area 10x10 km:
 0%
 0.8%
 0.57%
 0.45%
 0%
 1.36%
 0%
 0%
 0%
 0%
 96.82%Square area 50x50 km:
 0%
 0.07%
 0.04%
 0.02%
 0%
 0.06%
 0.02%
 0%
 0%
 0%
 99.8%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
58° 8' 17.2" North, 28° 51' 10.8" East
57° 45' 54.1" North, 29° 33' 22" East
57° 23' 16.9" North, 30° 15' 33.3" East
Some cities around Porkhov sort by population:
• Pskov
		71.7 km =44.6 mi, 
274°
• Luga
		109.4 km =68 mi, 
8°
• Ostrov
		85.7 km =53.3 mi, 
236°
• Sol’tsy
		60.4 km =37.5 mi, 
48°
• Dno
		25.1 km =15.6 mi, 
73°
• Dedovichi
		33.3 km =20.7 mi, 
135°
• Strugi-Krasnyye
		61.7 km =38.3 mi, 
334°
• Pushkinskiye Gory
		91.3 km =56.7 mi, 
205°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016