Night Light of Santurtzi (Basque Country) from space (Spain) Src. Average luminocity for 10x10km area is 79.2424% and for 50x50km: 18.1727%.
Square area 10x10 km:
 28.33%
 26.82%
 5.45%
 5.91%
 7.42%
 8.64%
 6.67%
 5%
 5.61%
 0.15%
 0%Square area 50x50 km:
 3.03%
 3.51%
 1.69%
 1.8%
 2.21%
 2.72%
 2.19%
 2.74%
 5.43%
 12.34%
 62.33%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
43° 50' 15.9" North, 3° 44' 8.2" West
43° 19' 42.3" North, 3° 1' 56.9" West
42° 48' 53.2" North, 2° 19' 45.7" West
Some cities around Santurtzi sort by population:
• Algorta
		3 km =1.9 mi, 
38°
• Getxo
		3.6 km =2.2 mi, 
28°
• Portugalete
		1.3 km =0.8 mi, 
130°
• Leioa
		3.5 km =2.2 mi, 
92°
• Sestao
		2.9 km =1.8 mi, 
135°
• Zierbena
		4.8 km =3 mi, 
300°
• Ortuella
		2.7 km =1.7 mi, 
224°
• Berango
		5 km =3.1 mi, 
35°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016