Night Light of Gualeguay (Entre Rios) from space (Argentina) Src. Average luminocity for 10x10km area is 35.7308% and for 50x50km: 1.6726%.
Square area 10x10 km:
 4.58%
 3.66%
 5.31%
 5.86%
 6.04%
 9.71%
 1.83%
 4.76%
 6.78%
 31.32%
 20.15%Square area 50x50 km:
 0.18%
 0.14%
 0.2%
 0.23%
 0.29%
 0.43%
 0.07%
 0.18%
 0.26%
 1.54%
 96.48%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
32° 33' 3.1" South, 60° 0' 46" West
33° 8' 29.6" South, 59° 18' 34.8" West
33° 43' 42" South, 58° 36' 23.5" West
Some cities around Gualeguay sort by population:
• San Nicolás de los Arroyos
		86.5 km =53.7 mi, 
255°
• San Pedro
		68.3 km =42.4 mi, 
208°
• Villa Constitución
		95.4 km =59.3 mi, 
264°
• Victoria
		98 km =60.9 mi, 
306°
• Fray Bentos, UY
		93.1 km =57.8 mi, 
88°
• Rosario del Tala
		94.5 km =58.7 mi, 
9°
• Urdinarrain
		63.9 km =39.7 mi, 
37°
• Larroque
		31 km =19.3 mi, 
67°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016