Night Light of Gafanha da Nazaré (Aveiro) from space (Portugal) Src. Average luminocity for 10x10km area is 56.0081% and for 50x50km: 24.3096%.
Square area 10x10 km:
 10.55%
 17.05%
 7.79%
 3.9%
 7.31%
 7.79%
 3.57%
 7.63%
 16.07%
 17.05%
 1.3%Square area 50x50 km:
 1.81%
 3.57%
 2.69%
 3.02%
 4.65%
 5.35%
 3.75%
 6.31%
 11.6%
 11.26%
 46%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 10' 3.5" North, 9° 24' 59.4" West
40° 38' 10.4" North, 8° 42' 48.2" West
40° 6' 1.8" North, 8° 0' 36.9" West
Some cities around Gafanha da Nazaré sort by population:
• Aveiro
		5.8 km =3.6 mi, 
81°
• Ílhavo
		5.3 km =3.3 mi, 
136°
• Esgueira
		7.2 km =4.5 mi, 
78°
• Murtosa
		12.9 km =8 mi, 
29°
• Beduido
		19.2 km =11.9 mi, 
42°
• Aradas
		6.3 km =3.9 mi, 
105°
• Oiã
		18.1 km =11.2 mi, 
125°
• Eixo
		12.2 km =7.6 mi, 
94°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016