Night Light of Gemunde (Porto) from space (Portugal) Src. Average luminocity for 10x10km area is 88.9821% and for 50x50km: 48.5946%.
Square area 10x10 km:
 40.26%
 40.26% 20.94%
 20.94% 7.95%
 7.95% 19.32%
 19.32% 11.36%
 11.36% 0.16%
 0.16% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 13.52%
 13.52% 10.66%
 10.66% 5.74%
 5.74% 7.05%
 7.05% 8.73%
 8.73% 6.01%
 6.01% 5.5%
 5.5% 4.62%
 4.62% 4.11%
 4.11% 4.15%
 4.15% 29.92%
 29.92%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 47' 38.4" North, 9° 20' 53.8" West
41° 16' 3.6" North, 8° 38' 42.5" West
40° 44' 13.3" North, 7° 56' 31.3" West
Some cities around Gemunde sort by population:
• Maia
		4.1 km =2.5 mi,  149°
149°
• Leça do Bailio
		6.3 km =3.9 mi,  171°
171°
• Moreira
		2.2 km =1.4 mi,  185°
185°
• Anta
		1.4 km =0.9 mi,  95°
95°
• Lavra
		6.2 km =3.9 mi,  261°
261°
• Guifões
		8.1 km =5 mi,  194°
194°
• São Romão do Coronado
		7.1 km =4.4 mi,  73°
73°
• Santa Cruz do Bispo
		6.4 km =4 mi,  202°
202°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016