Night Light of Perafita (Porto) from space (Portugal) Src. Average luminocity for 10x10km area is 50.8782% and for 50x50km: 43.4359%.
Square area 10x10 km:
 3.57%
 3.57% 6.66%
 6.66% 5.03%
 5.03% 8.6%
 8.6% 11.53%
 11.53% 10.06%
 10.06% 14.29%
 14.29% 14.61%
 14.61% 22.4%
 22.4% 3.25%
 3.25% 0%
 0%Square area 50x50 km:
 4.4%
 4.4% 7.46%
 7.46% 6.2%
 6.2% 8.54%
 8.54% 9.85%
 9.85% 8.47%
 8.47% 7.3%
 7.3% 6.34%
 6.34% 7.76%
 7.76% 8.96%
 8.96% 24.72%
 24.72%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 42' 34.4" North, 8° 57' 27.5" West
41° 10' 57.1" North, 8° 15' 16.2" West
40° 39' 4.3" North, 7° 33' 5" West
Some cities around Perafita sort by population:
• Paredes
		6.9 km =4.3 mi,  291°
291°
• Rebordosa
		13.5 km =8.4 mi,  289°
289°
• Madalena
		7.7 km =4.8 mi,  299°
299°
• Marco de Canavezes
		8.9 km =5.5 mi,  89°
89°
• Alpendurada
		10.4 km =6.5 mi,  176°
176°
• Castelões de Cepeda
		7.1 km =4.4 mi,  288°
288°
• Penafiel
		3.7 km =2.3 mi,  320°
320°
• Freamunde
		13.6 km =8.5 mi,  330°
330°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016