Night Light of Langon (Nouvelle-Aquitaine) from space (France) Src. Average luminocity for 10x10km area is 19.981% and for 50x50km: 4.7891%.
Square area 10x10 km:
 2.38%
 2.7%
 0%
 0.95%
 2.86%
 4.29%
 6.03%
 4.44%
 3.33%
 15.71%
 57.3%Square area 50x50 km:
 0.25%
 0.42%
 0.31%
 0.42%
 0.83%
 1.15%
 0.97%
 1.14%
 1.59%
 3.01%
 89.9%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
45° 3' 7.2" North, 0° 57' 9.5" West
44° 33' 11.2" North, 0° 14' 58.2" West
44° 2' 59.6" North, 0° 27' 13" East
Some cities around Langon sort by population:
• Villenave-d’Ornon
		33.8 km =21 mi, 
316°
• Gradignan
		37.8 km =23.5 mi, 
310°
• Bègles
		36.9 km =22.9 mi, 
320°
• Marmande
		33.4 km =20.8 mi, 
100°
• Floirac
		37.4 km =23.2 mi, 
326°
• Léognan
		34.2 km =21.3 mi, 
306°
• Bazas
		13.8 km =8.6 mi, 
167°
• Casteljaloux
		37.4 km =23.2 mi, 
134°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016