Night Light of Arrigorriaga (Basque Country) from space (Spain) Src. Average luminocity for 10x10km area is 45.8591% and for 50x50km: 19.8275%.
Square area 10x10 km:
 9.55%
 10.3%
 2.12%
 5.15%
 5.45%
 6.21%
 6.52%
 7.12%
 20%
 23.33%
 4.24%Square area 50x50 km:
 3.32%
 3.89%
 1.66%
 1.88%
 2.43%
 2.97%
 2.25%
 2.88%
 5.76%
 13.91%
 59.07%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
43° 43' 13.4" North, 3° 35' 19.5" West
43° 12' 36.2" North, 2° 53' 8.2" West
42° 41' 43.6" North, 2° 10' 57" West
Some cities around Arrigorriaga sort by population:
• Bilbao
		6.7 km =4.2 mi, 
331°
• Barakaldo
		12.7 km =7.9 mi, 
319°
• Santutxu
		5.4 km =3.4 mi, 
332°
• Basauri
		3.3 km =2.1 mi, 
359°
• Galdakao
		4.2 km =2.6 mi, 
56°
• Erandio
		12.7 km =7.9 mi, 
325°
• Laudio / Llodio
		9.7 km =6 mi, 
219°
• Amorebieta
		12.4 km =7.7 mi, 
86°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016