Night Light of Negrelos (Porto) from space (Portugal) Src. Average luminocity for 10x10km area is 68.6361% and for 50x50km: 64.6356%.
Square area 10x10 km:
 2.89%
 2.89% 11.39%
 11.39% 9.69%
 9.69% 19.9%
 19.9% 28.23%
 28.23% 14.8%
 14.8% 11.9%
 11.9% 1.19%
 1.19% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 12.32%
 12.32% 12.62%
 12.62% 8.51%
 8.51% 10.8%
 10.8% 14.15%
 14.15% 11.9%
 11.9% 10.05%
 10.05% 8.22%
 8.22% 6.32%
 6.32% 3.46%
 3.46% 1.65%
 1.65%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 52' 30.5" North, 9° 6' 16.5" West
41° 20' 58.1" North, 8° 24' 5.2" West
40° 49' 10.2" North, 7° 41' 54" West
Some cities around Negrelos sort by population:
• Santo Tirso
		6.4 km =4 mi,  263°
263°
• Caldas de Vizela
		8.5 km =5.3 mi,  64°
64°
• Aves
		2.4 km =1.5 mi,  342°
342°
• Freamunde
		8.8 km =5.5 mi,  140°
140°
• Paços de Ferreira
		8.4 km =5.2 mi,  165°
165°
• Moreira de Conegos
		6.6 km =4.1 mi,  51°
51°
• Barrosas
		8.5 km =5.3 mi,  85°
85°
• São Miguel do Couto
		5.4 km =3.4 mi,  248°
248°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016