Night Light of Guijuelo (Castille and León) from space (Spain) Src. Average luminocity for 10x10km area is 9.6299% and for 50x50km: 1.4113%.
Square area 10x10 km:
 1.3%
 1.95%
 1.95%
 1.3%
 0%
 0.97%
 0.65%
 0.32%
 0%
 0%
 91.56%Square area 50x50 km:
 0.08%
 0.25%
 0.2%
 0.23%
 0.15%
 0.07%
 0.25%
 0.29%
 0.35%
 0.23%
 97.9%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 5' 22.7" North, 6° 22' 25.7" West
40° 33' 27.3" North, 5° 40' 14.4" West
40° 1' 16.5" North, 4° 58' 3.2" West
Some cities around Guijuelo sort by population:
• Salamanca
		45.7 km =28.4 mi, 
0°
• Béjar
		20.6 km =12.8 mi, 
202°
• Santa Marta de Tormes
		43.9 km =27.3 mi, 
4°
• Talayuela
		63.7 km =39.6 mi, 
175°
• Jaraíz de la Vera
		55.8 km =34.7 mi, 
187°
• Arenas de San Pedro
		62.7 km =39 mi, 
127°
• Peñaranda de Bracamonte
		55 km =34.2 mi, 
46°
• Candeleda
		57.7 km =35.9 mi, 
140°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016