Night Light of Rio Formoso (Pernambuco) from space (Brazil) Src. Average luminocity for 10x10km area is 10.0971% and for 50x50km: 7.2355%.
Square area 10x10 km:
 0%
 1.86%
 2.27%
 0%
 0.62%
 0.21%
 2.27%
 1.03%
 3.31%
 3.72%
 84.71%Square area 50x50 km:
 0.25%
 0.78%
 1.17%
 1.02%
 0.77%
 1.1%
 1.04%
 1.42%
 1.2%
 5.86%
 85.39%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
7° 58' 23" South, 35° 51' 57.2" West
8° 40' 7.6" South, 35° 9' 46" West
9° 21' 47.5" South, 34° 27' 34.7" West
Some cities around Rio Formoso sort by population:
• Ipojuca
		31.9 km =19.8 mi, 
19°
• Escada
		35.1 km =21.8 mi, 
349°
• Sirinhaém
		10.1 km =6.3 mi, 
30°
• Barreiros
		16.8 km =10.4 mi, 
188°
• Ribeirão
		29.2 km =18.1 mi, 
305°
• Gameleira
		26.3 km =16.3 mi, 
290°
• Tamandaré
		11.9 km =7.4 mi, 
144°
• São José da Coroa Grande
		25.5 km =15.8 mi, 
176°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016