Night Light of Porto (Piauí) from space (Brazil) Src. Average luminocity for 10x10km area is 4.0368% and for 50x50km: 1.4411%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
3° 11' 29.6" South, 43° 24' 47.3" West
3° 53' 36" South, 42° 42' 36" West
4° 35' 40.3" South, 42° 0' 24.8" West
Some cities around Porto sort by population:
• Coelho Neto
52.5 km =32.6 mi, 219°
• Barras
60.4 km =37.5 mi, 130°
• Esperantina
52.9 km =32.9 mi, 91°
• Santa Quitéria do Maranhão
45.7 km =28.4 mi, 23°
• Luzilândia
61.4 km =38.2 mi, 37°
• Brejo
23.7 km =14.7 mi, 349°
• São Bernardo
67.5 km =41.9 mi, 28°
• Miguel Alves
36.6 km =22.7 mi, 214°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016