Night Light of Vilar de Andorinho (Porto) from space (Portugal) Src. Average luminocity for 10x10km area is 98.4545% and for 50x50km: 46.9086%.
Square area 10x10 km:
 73.7%
 73.7% 19.81%
 19.81% 4.71%
 4.71% 1.79%
 1.79% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 13.79%
 13.79% 10.15%
 10.15% 5.12%
 5.12% 7.35%
 7.35% 7.38%
 7.38% 4.82%
 4.82% 4.44%
 4.44% 4.36%
 4.36% 5.54%
 5.54% 6.8%
 6.8% 30.25%
 30.25%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 38' 0.2" North, 9° 17' 21.7" West
41° 6' 20.7" North, 8° 35' 10.4" West
40° 34' 25.7" North, 7° 52' 59.2" West
Some cities around Vilar de Andorinho sort by population:
• Vila Nova de Gaia
		3 km =1.9 mi,  312°
312°
• Oliveira do Douro
		2.1 km =1.3 mi,  3°
3°
• Valbom
		3.3 km =2.1 mi,  37°
37°
• Canelas
		2.7 km =1.7 mi,  204°
204°
• Azenha
		4.6 km =2.9 mi,  224°
224°
• Avintes
		2.9 km =1.8 mi,  87°
87°
• Gulpilhares
		4.2 km =2.6 mi,  233°
233°
• Perozinho
		4.5 km =2.8 mi,  179°
179°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016