Night Light of San Salvador (Entre Rios) from space (Argentina) Src. Average luminocity for 10x10km area is 15.1465% and for 50x50km: 0.9899%.
Square area 10x10 km:
 1.65%
 2.01%
 4.58%
 0.55%
 0%
 1.28%
 3.11%
 4.4%
 0.73%
 2.56%
 79.12%Square area 50x50 km:
 0.1%
 0.1%
 0.22%
 0.07%
 0.08%
 0.17%
 0.15%
 0.26%
 0.06%
 0.16%
 98.62%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
31° 1' 27.3" South, 59° 12' 30.1" West
31° 37' 29.5" South, 58° 30' 18.9" West
32° 13' 17.9" South, 57° 48' 7.6" West
Some cities around San Salvador sort by population:
• Concordia
		52.7 km =32.7 mi, 
60°
• Salto, UY
		57.7 km =35.9 mi, 
62°
• Paysandú, UY
		86.8 km =53.9 mi, 
152°
• Villaguay
		56.1 km =34.9 mi, 
241°
• Federal
		79.1 km =49.2 mi, 
340°
• Federación
		89.7 km =55.7 mi, 
39°
• Villa Elisa
		60.7 km =37.7 mi, 
170°
• Bovril
		94.5 km =58.7 mi, 
289°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016