Night Light of Rio de Janeiro from space (Brazil) Src. Average luminocity for 10x10km area is 84.6567% and for 50x50km: 54.2464%.
Square area 10x10 km:
 28.17%
 28.17% 23.21%
 23.21% 4.76%
 4.76% 21.03%
 21.03% 15.48%
 15.48% 5.75%
 5.75% 1.19%
 1.19% 0.4%
 0.4% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 21.16%
 21.16% 11.75%
 11.75% 4.26%
 4.26% 8.11%
 8.11% 7.44%
 7.44% 3.93%
 3.93% 2.47%
 2.47% 2.6%
 2.6% 6.23%
 6.23% 8.7%
 8.7% 23.35%
 23.35%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
22° 15' 26" South, 43° 53' 7.3" West
22° 54' 23.1" South, 43° 10' 56" West
23° 33' 9.1" South, 42° 28' 44.8" West
 
Some cities around Rio de Janeiro sort by population:
• Nova Iguaçu
		32.1 km =19.9 mi,  300°
300°
• Duque de Caxias
		18.9 km =11.7 mi,  315°
315°
• Belford Roxo
		27.3 km =17 mi,  305°
305°
• Niterói
		8.5 km =5.3 mi,  72°
72°
• São João de Meriti
		22.6 km =14 mi,  300°
300°
• ItaboraÃ
		37.7 km =23.4 mi,  61°
61°
• Nilópolis
		26.2 km =16.3 mi,  294°
294°
• Maricá
		37.3 km =23.2 mi,  92°
92°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016
Src.2: picture by Oleg Kononenko, Roscosmos, retrieved 2019-11-29