Night Light of Santander (Cantabria) from space (Spain) Src. Average luminocity for 10x10km area is 58.9952% and for 50x50km: 14.7263%.
Square area 10x10 km:
 17.94%
 16.19%
 3.65%
 2.22%
 8.1%
 8.89%
 3.17%
 11.11%
 15.08%
 11.75%
 1.9%Square area 50x50 km:
 1.47%
 2%
 1.53%
 1.41%
 2.84%
 3.56%
 1.96%
 2.69%
 5.23%
 9.51%
 67.8%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
43° 58' 22.4" North, 4° 30' 27.3" West
43° 27' 53" North, 3° 48' 16" West
42° 57' 8.1" North, 3° 6' 4.8" West
Some cities around Santander sort by population:
• Torrelavega
		23.5 km =14.6 mi, 
236°
• Camargo
		9.1 km =5.7 mi, 
225°
• El Astillero
		7.2 km =4.5 mi, 
190°
• Santoña
		28.1 km =17.5 mi, 
94°
• Los Corrales de Buelna
		31.1 km =19.3 mi, 
224°
• Reocín
		27.2 km =16.9 mi, 
239°
• Colindres
		29.3 km =18.2 mi, 
104°
• Suances
		19.6 km =12.2 mi, 
259°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016