Night Light of Tambo Grande (Piura) from space (Peru) Src. Average luminocity for 10x10km area is 10.1963% and for 50x50km: 1.702%.
Square area 10x10 km:
 0.83%
 0.83%
 3.31%
 0.83%
 0%
 1.65%
 2.48%
 1.86%
 2.27%
 0%
 85.95%Square area 50x50 km:
 0.11%
 0.09%
 0.39%
 0.15%
 0.09%
 0.33%
 0.35%
 0.43%
 0.3%
 0.32%
 97.45%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
4° 13' 33.8" South, 81° 2' 52.3" West
4° 55' 37" South, 80° 20' 41" West
5° 37' 37.5" South, 79° 38' 29.8" West
Some cities around Tambo Grande sort by population:
• Piura
		43.6 km =27.1 mi, 
227°
• Sullana
		37.8 km =23.5 mi, 
273°
• Chulucanas
		27.3 km =17 mi, 
132°
• Marcavelica
		40.3 km =25 mi, 
277°
• Querecotillo
		34.8 km =21.6 mi, 
286°
• Morropón
		50.5 km =31.4 mi, 
124°
• Las Lomas
		32.3 km =20.1 mi, 
19°
• Salitral
		38.1 km =23.7 mi, 
281°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016