Night Light of Serpa (Beja) from space (Portugal) Src. Average luminocity for 10x10km area is 5.7013% and for 50x50km: 1.682%.
Square area 10x10 km:
 0.81%
 0.49%
 1.62%
 0.97%
 0.65%
 0%
 0.65%
 1.3%
 0.65%
 0%
 92.86%Square area 50x50 km:
 0.28%
 0.17%
 0.41%
 0.35%
 0.13%
 0.07%
 0.11%
 0.28%
 0.16%
 0.19%
 97.85%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
38° 29' 53.5" North, 8° 18' 2.4" West
37° 56' 44.9" North, 7° 35' 51.1" West
37° 23' 21.3" North, 6° 53' 39.9" West
Some cities around Serpa sort by population:
• Beja
		24.5 km =15.2 mi, 
288°
• Moura
		25.2 km =15.7 mi, 
31°
• Almodôvar
		63 km =39.1 mi, 
220°
• Mértola
		34.1 km =21.2 mi, 
189°
• Reguengos de Monsaraz
		53.6 km =33.3 mi, 
5°
• Vidigueira
		34.3 km =21.3 mi, 
328°
• Oliva de la Frontera, ES
		69.8 km =43.4 mi, 
58°
• Aljustrel
		50.4 km =31.3 mi, 
261°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016