Night Light of Porto Velho (Rondônia) from space (Brazil) Src. Average luminocity for 10x10km area is 80.781% and for 50x50km: 11.2333%.
Square area 10x10 km:
 41.12%
 14.46%
 4.55%
 5.37%
 12.4%
 7.02%
 9.92%
 3.1%
 1.45%
 0.62%
 0%Square area 50x50 km:
 2.43%
 1.5%
 1.08%
 1.29%
 2.17%
 1.36%
 1.93%
 1.89%
 2.01%
 5.71%
 78.64%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
8° 3' 59" South, 64° 36' 25.3" West
8° 45' 43" South, 63° 54' 14" West
9° 27' 22.3" South, 63° 12' 2.8" West
Some cities around Porto Velho sort by population:
• Ariquemes
		159.2 km =98.9 mi, 
143°
• Guayaramerín, BO
		279.4 km =173.6 mi, 
214°
• Guajará Mirim
		274.1 km =170.3 mi, 
214°
• Humaitá
		168.5 km =104.7 mi, 
34°
• Jaru
		244.1 km =151.7 mi, 
139°
• Ouro Preto do Oeste
		288.1 km =179 mi, 
140°
• Canutama
		253.3 km =157.4 mi, 
347°
• Extrema
		291.5 km =181.1 mi, 
247°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016