Night Light of Gulpilhares (Porto) from space (Portugal) Src. Average luminocity for 10x10km area is 86.7224% and for 50x50km: 43.2743%.
Square area 10x10 km:
 55.68%
 55.68% 23.54%
 23.54% 1.62%
 1.62% 0.32%
 0.32% 0.97%
 0.97% 0.65%
 0.65% 1.46%
 1.46% 8.28%
 8.28% 7.14%
 7.14% 0.32%
 0.32% 0%
 0%Square area 50x50 km:
 13.52%
 13.52% 9.8%
 9.8% 4.78%
 4.78% 6.43%
 6.43% 6.22%
 6.22% 3.8%
 3.8% 3.58%
 3.58% 4.05%
 4.05% 4.96%
 4.96% 6.45%
 6.45% 36.41%
 36.41%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 36' 38.8" North, 9° 19' 47.7" West
41° 4' 58.5" North, 8° 37' 36.4" West
40° 33' 2.9" North, 7° 55' 25.2" West
Some cities around Gulpilhares sort by population:
• Vilar de Andorinho
		4.2 km =2.6 mi,  53°
53°
• Vilar do ParaĆso
		0.9 km =0.6 mi,  32°
32°
• Arcozelo
		2.4 km =1.5 mi,  190°
190°
• Canelas
		2.2 km =1.4 mi,  88°
88°
• Azenha
		0.7 km =0.4 mi,  166°
166°
• Serzedo
		3.7 km =2.3 mi,  165°
165°
• Perozinho
		4 km =2.5 mi,  119°
119°
• Vila Nova da Telha
		1.8 km =1.1 mi,  224°
224°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016