Night Light of Lavra (Porto) from space (Portugal) Src. Average luminocity for 10x10km area is 61.0617% and for 50x50km: 40.7285%.
Square area 10x10 km:
 18.02%
 18.02% 18.02%
 18.02% 6.01%
 6.01% 12.34%
 12.34% 4.06%
 4.06% 1.3%
 1.3% 1.79%
 1.79% 4.71%
 4.71% 13.15%
 13.15% 14.12%
 14.12% 6.49%
 6.49%Square area 50x50 km:
 12.94%
 12.94% 8.96%
 8.96% 4.13%
 4.13% 5.12%
 5.12% 6.71%
 6.71% 4.77%
 4.77% 4.47%
 4.47% 4.15%
 4.15% 3.64%
 3.64% 3.03%
 3.03% 42.07%
 42.07%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 47' 8.8" North, 9° 25' 17.8" West
41° 15' 33.7" North, 8° 43' 6.6" West
40° 43' 43.1" North, 8° 0' 55.3" West
Some cities around Lavra sort by population:
• Maia
		8.7 km =5.4 mi,  107°
107°
• Leça da Palmeira
		7.8 km =4.8 mi,  168°
168°
• Leça do Bailio
		8.8 km =5.5 mi,  126°
126°
• Moreira
		6 km =3.7 mi,  102°
102°
• Anta
		7.6 km =4.7 mi,  84°
84°
• Guifões
		8 km =5 mi,  148°
148°
• Santa Cruz do Bispo
		6.2 km =3.9 mi,  143°
143°
• Gemunde
		6.2 km =3.9 mi,  81°
81°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016