Night Light of Gualeguaychú (Entre Rios) from space (Argentina) Src. Average luminocity for 10x10km area is 42.2949% and for 50x50km: 3.7309%.
Square area 10x10 km:
 6.78%
 7.33%
 4.21%
 7.69%
 6.23%
 8.06%
 3.66%
 4.21%
 9.34%
 36.45%
 6.04%Square area 50x50 km:
 0.28%
 0.34%
 0.43%
 0.77%
 0.67%
 0.67%
 0.28%
 0.53%
 0.64%
 3.42%
 91.96%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
32° 25' 4" South, 59° 13' 13.3" West
33° 0' 33.7" South, 58° 31' 2" West
33° 35' 49.3" South, 57° 48' 50.8" West
Some cities around Gualeguaychú sort by population:
• Paysandú, UY
		87.1 km =54.1 mi, 
27°
• Concepción del Uruguay
		64.1 km =39.8 mi, 
24°
• Mercedes, UY
		52.8 km =32.8 mi, 
120°
• Fray Bentos, UY
		22.6 km =14 mi, 
121°
• Young, UY
		90.1 km =56 mi, 
67°
• Dolores, UY
		64.3 km =40 mi, 
154°
• Urdinarrain
		50.3 km =31.3 mi, 
315°
• Larroque
		45.2 km =28.1 mi, 
266°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016