Night Light of Colindres (Cantabria) from space (Spain) Src. Average luminocity for 10x10km area is 26.8952% and for 50x50km: 6.8555%.
Square area 10x10 km:
 1.43%
 1.43%
 3.02%
 5.56%
 5.4%
 4.29%
 2.06%
 4.13%
 6.19%
 45.71%
 20.79%Square area 50x50 km:
 0.32%
 0.39%
 0.57%
 0.75%
 1.16%
 1.53%
 1.24%
 1.54%
 1.91%
 7.52%
 83.08%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
43° 54' 19.5" North, 4° 9' 24.3" West
43° 23' 48" North, 3° 27' 13" West
42° 53' 1" North, 2° 45' 1.8" West
Some cities around Colindres sort by population:
• Santander
		29.3 km =18.2 mi, 
284°
• Castro-Urdiales
		18.9 km =11.7 mi, 
94°
• El Astillero
		29.6 km =18.4 mi, 
270°
• Laredo
		3.4 km =2.1 mi, 
64°
• Santoña
		5.3 km =3.3 mi, 
356°
• Zierbena
		30.4 km =18.9 mi, 
99°
• Zalla
		31.6 km =19.6 mi, 
125°
• Santa María de Cayón
		32.5 km =20.2 mi, 
252°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016