Night Light of Madalena (Porto) from space (Portugal) Src. Average luminocity for 10x10km area is 80.4123% and for 50x50km: 56.4731%.
Square area 10x10 km:
 10.88%
 10.88% 22.4%
 22.4% 16.4%
 16.4% 28.25%
 28.25% 16.88%
 16.88% 2.6%
 2.6% 2.11%
 2.11% 0.49%
 0.49% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 11.32%
 11.32% 10.58%
 10.58% 7.52%
 7.52% 9.54%
 9.54% 11.25%
 11.25% 9.11%
 9.11% 8%
 8% 6.74%
 6.74% 7.56%
 7.56% 8.33%
 8.33% 10.05%
 10.05%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 44' 34.5" North, 9° 2' 15.5" West
41° 12' 58.2" North, 8° 20' 4.2" West
40° 41' 6.4" North, 7° 37' 53" West
Some cities around Madalena sort by population:
• Paredes
		1.3 km =0.8 mi,  168°
168°
• Perafita
		7.7 km =4.8 mi,  119°
119°
• Rebordosa
		6.1 km =3.8 mi,  278°
278°
• Lordelo
		6.1 km =3.8 mi,  289°
289°
• Castelões de Cepeda
		1.5 km =0.9 mi,  182°
182°
• Penafiel
		4.4 km =2.7 mi,  101°
101°
• Freamunde
		8 km =5 mi,  359°
359°
• Paços de Ferreira
		7.6 km =4.7 mi,  332°
332°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016