Night Light of Portugalete (Basque Country) from space (Spain) Src. Average luminocity for 10x10km area is 80.0909% and for 50x50km: 18.5073%.
Square area 10x10 km:
 30.3%
 27.58%
 4.09%
 5.91%
 6.82%
 8.33%
 6.67%
 5.3%
 4.55%
 0.45%
 0%Square area 50x50 km:
 3.1%
 3.55%
 1.73%
 1.81%
 2.3%
 2.7%
 2.2%
 2.8%
 5.47%
 12.6%
 61.73%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
43° 49' 49.3" North, 3° 43' 25.6" West
43° 19' 15.6" North, 3° 1' 14.3" West
42° 48' 26.3" North, 2° 19' 3.1" West
Some cities around Portugalete sort by population:
• Barakaldo
		3.8 km =2.4 mi, 
136°
• Algorta
		3.3 km =2.1 mi, 
16°
• Getxo
		4.1 km =2.5 mi, 
10°
• Santurtzi
		1.3 km =0.8 mi, 
310°
• Leioa
		2.7 km =1.7 mi, 
75°
• Sestao
		1.7 km =1.1 mi, 
138°
• Erandio
		4.2 km =2.6 mi, 
115°
• Ortuella
		3.1 km =1.9 mi, 
249°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016