Night Light of Aveiro from space (Portugal) Src. Average luminocity for 10x10km area is 68.612% and for 50x50km: 26.7104%.
Square area 10x10 km:
 20.13%
 18.83%
 6.33%
 7.31%
 10.23%
 7.47%
 5.19%
 7.63%
 12.66%
 4.22%
 0%Square area 50x50 km:
 1.94%
 3.85%
 2.9%
 3.39%
 5.28%
 5.66%
 4.06%
 6.7%
 12.03%
 13.97%
 40.21%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 10' 32.3" North, 9° 20' 55.2" West
40° 38' 39.4" North, 8° 38' 43.9" West
40° 6' 31.1" North, 7° 56' 32.7" West
Some cities around Aveiro sort by population:
• Ílhavo
		5.2 km =3.2 mi, 
203°
• Gafanha da Nazaré
		5.8 km =3.6 mi, 
261°
• Esgueira
		1.5 km =0.9 mi, 
68°
• Murtosa
		10.3 km =6.4 mi, 
3°
• Albergaria-a-Velha
		15 km =9.3 mi, 
68°
• Aradas
		2.6 km =1.6 mi, 
173°
• Oiã
		14.5 km =9 mi, 
141°
• Eixo
		6.7 km =4.2 mi, 
106°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016