Night Light of Erandio (Basque Country) from space (Spain) Src. Average luminocity for 10x10km area is 80.6% and for 50x50km: 19.3415%.
Square area 10x10 km:
 29.09%
 27.27%
 6.67%
 3.48%
 10.61%
 7.88%
 4.55%
 8.64%
 1.82%
 0%
 0%Square area 50x50 km:
 3.17%
 3.65%
 1.85%
 1.94%
 2.38%
 2.8%
 2.24%
 2.82%
 5.69%
 13.35%
 60.12%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
43° 48' 50" North, 3° 40' 35.9" West
43° 18' 15.8" North, 2° 58' 24.7" West
42° 47' 26" North, 2° 16' 13.4" West
Some cities around Erandio sort by population:
• Bilbao
		6.1 km =3.8 mi, 
139°
• Barakaldo
		1.5 km =0.9 mi, 
233°
• Algorta
		5.8 km =3.6 mi, 
329°
• Getxo
		6.6 km =4.1 mi, 
332°
• Portugalete
		4.2 km =2.6 mi, 
295°
• Santurtzi
		5.5 km =3.4 mi, 
299°
• Leioa
		2.8 km =1.7 mi, 
333°
• Sestao
		2.8 km =1.7 mi, 
282°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016