Night Light of Sylva (Perm) from space (Russia) Src. Average luminocity for 10x10km area is 1.0857% and for 50x50km: 2.8509%.
Square area 10x10 km:
 0%
 0%
 0%
 0%
 0%
 0.83%
 0.48%
 1.07%
 0%
 0%
 97.62%Square area 50x50 km:
 0.51%
 0.59%
 0.17%
 0.16%
 0.31%
 0.27%
 0.28%
 0.93%
 1.01%
 1.38%
 94.4%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
58° 24' 10.9" North, 56° 4' 5.4" East
58° 1' 57.7" North, 56° 46' 16.7" East
57° 39' 30.6" North, 57° 28' 27.9" East
Some cities around Sylva sort by population:
• Perm
		30.8 km =19.1 mi, 
265°
• Lys’va
		61.4 km =38.2 mi, 
82°
• Krasnokamsk
		60 km =37.3 mi, 
274°
• Dobryanka
		52.4 km =32.6 mi, 
336°
• Polazna
		35.6 km =22.1 mi, 
324°
• Zvëzdnyy
		42.9 km =26.7 mi, 
218°
• Novyye Lyady
		9.8 km =6.1 mi, 
284°
• Kondratovo
		39.6 km =24.6 mi, 
261°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016