Night Light of Arcozelo (Porto) from space (Portugal) Src. Average luminocity for 10x10km area is 80.2873% and for 50x50km: 42.427%.
Square area 10x10 km:
 44.32%
 44.32% 24.68%
 24.68% 4.38%
 4.38% 0%
 0% 0.65%
 0.65% 1.3%
 1.3% 1.46%
 1.46% 8.77%
 8.77% 11.2%
 11.2% 3.25%
 3.25% 0%
 0%Square area 50x50 km:
 13.5%
 13.5% 9.48%
 9.48% 4.67%
 4.67% 6.02%
 6.02% 6.11%
 6.11% 3.97%
 3.97% 3.42%
 3.42% 3.87%
 3.87% 4.92%
 4.92% 6.44%
 6.44% 37.6%
 37.6%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 35' 23.6" North, 9° 20' 6.2" West
41° 3' 42.7" North, 8° 37' 54.9" West
40° 31' 46.5" North, 7° 55' 43.7" West
Some cities around Arcozelo sort by population:
• Vilar do Paraíso
		3.2 km =2 mi,  16°
16°
• Canelas
		3.6 km =2.2 mi,  48°
48°
• Azenha
		1.7 km =1.1 mi,  20°
20°
• São Félix da Marinha
		3 km =1.9 mi,  165°
165°
• Gulpilhares
		2.4 km =1.5 mi,  10°
10°
• Serzedo
		1.8 km =1.1 mi,  132°
132°
• Perozinho
		3.9 km =2.4 mi,  84°
84°
• Vila Nova da Telha
		1.4 km =0.9 mi,  323°
323°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016