Night Light of Torres Vedras (Lisbon) from space (Portugal) Src. Average luminocity for 10x10km area is 48.414% and for 50x50km: 28.993%.
Square area 10x10 km:
 4.06%
 8.93%
 6.17%
 6.66%
 7.63%
 7.14%
 6.49%
 15.91%
 28.25%
 8.77%
 0%Square area 50x50 km:
 1.92%
 3.64%
 3.29%
 3.1%
 5.69%
 5.94%
 5.74%
 8.82%
 12.51%
 15.73%
 33.62%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
39° 38' 4.9" North, 9° 57' 42.2" West
39° 5' 27.9" North, 9° 15' 31" West
38° 32' 35.7" North, 8° 33' 19.7" West
Some cities around Torres Vedras sort by population:
• Mafra
		18 km =11.2 mi, 
199°
• Lourinhã
		17.4 km =10.8 mi, 
344°
• Ericeira
		19.7 km =12.2 mi, 
223°
• Silveira
		9.4 km =5.8 mi, 
283°
• A dos Cunhados
		7.6 km =4.7 mi, 
333°
• Arruda dos Vinhos
		19.7 km =12.2 mi, 
127°
• Milharado
		16.8 km =10.4 mi, 
162°
• Ventosa
		15.6 km =9.7 mi, 
75°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016