Night Light of Alpendurada (Porto) from space (Portugal) Src. Average luminocity for 10x10km area is 48.4416% and for 50x50km: 36.4055%.
Square area 10x10 km:
 1.79%
 1.79% 4.06%
 4.06% 5.52%
 5.52% 8.93%
 8.93% 12.01%
 12.01% 15.75%
 15.75% 15.1%
 15.1% 6.82%
 6.82% 18.51%
 18.51% 11.04%
 11.04% 0.49%
 0.49%Square area 50x50 km:
 3.68%
 3.68% 6.08%
 6.08% 4.84%
 4.84% 7.04%
 7.04% 8.17%
 8.17% 6.44%
 6.44% 6.33%
 6.33% 6.04%
 6.04% 7.37%
 7.37% 8.85%
 8.85% 35.15%
 35.15%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 37' 2.1" North, 8° 56' 58.4" West
41° 5' 22" North, 8° 14' 47.1" West
40° 33' 26.5" North, 7° 32' 35.9" West
Some cities around Alpendurada sort by population:
• Paredes
		14.7 km =9.1 mi,  330°
330°
• Perafita
		10.4 km =6.5 mi,  356°
356°
• Moreira
		12.5 km =7.8 mi,  252°
252°
• Melres
		13.1 km =8.1 mi,  260°
260°
• Madalena
		15.9 km =9.9 mi,  332°
332°
• Marco de Canavezes
		13.3 km =8.3 mi,  37°
37°
• Castelões de Cepeda
		14.6 km =9.1 mi,  329°
329°
• Penafiel
		13.6 km =8.5 mi,  347°
347°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016