Night Light of Lourinhã (Lisbon) from space (Portugal) Src. Average luminocity for 10x10km area is 42.7041% and for 50x50km: 19.6275%.
Square area 10x10 km:
 0.85%
 5.44%
 6.8%
 6.63%
 14.29%
 6.63%
 2.89%
 13.78%
 17.86%
 21.6%
 3.23%Square area 50x50 km:
 1.11%
 2.1%
 2.16%
 2.12%
 3.4%
 3.55%
 2.83%
 5.39%
 9.53%
 19.72%
 48.08%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
39° 47' 2.8" North, 10° 0' 56.4" West
39° 14' 30" North, 9° 18' 45.1" West
38° 41' 42" North, 8° 36' 33.9" West
Some cities around Lourinhã sort by population:
• Caldas da Rainha
		23.4 km =14.5 mi, 
39°
• Torres Vedras
		17.4 km =10.8 mi, 
164°
• Peniche
		14 km =8.7 mi, 
335°
• Óbidos
		18.8 km =11.7 mi, 
45°
• Atouguia da Baleia
		10.8 km =6.7 mi, 
353°
• Silveira
		15.2 km =9.4 mi, 
197°
• A dos Cunhados
		10 km =6.2 mi, 
172°
• Bombarral
		13.6 km =8.5 mi, 
77°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016