Night Light of Aguiar da Beira (Guarda) from space (Portugal) Src. Average luminocity for 10x10km area is 6.2347% and for 50x50km: 6.143%.
Square area 10x10 km:
 0.51%
 1.53%
 0%
 0.68%
 0.34%
 1.36%
 0.34%
 0.51%
 3.74%
 2.21%
 88.78%Square area 50x50 km:
 0.42%
 0.84%
 0.44%
 0.53%
 0.72%
 1.01%
 1.04%
 1.31%
 1.95%
 2.85%
 88.89%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 20' 50.1" North, 8° 14' 50.8" West
40° 49' 2.1" North, 7° 32' 39.5" West
40° 16' 58.8" North, 6° 50' 28.3" West
Some cities around Aguiar da Beira sort by population:
• Viseu
		35.3 km =21.9 mi, 
240°
• Moimenta da Beira
		19.5 km =12.1 mi, 
341°
• Rio de Loba
		32.7 km =20.3 mi, 
239°
• Abraveses
		35.1 km =21.8 mi, 
244°
• Mangualde
		29.9 km =18.6 mi, 
217°
• Tabuaço
		33.3 km =20.7 mi, 
356°
• Sernancelhe
		10 km =6.2 mi, 
25°
• Vila Nova de Paiva
		15.9 km =9.9 mi, 
284°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016