Night Light of La Roche-sur-Yon (Pays de la Loire) from space (France) Src. Average luminocity for 10x10km area is 35.3764% and for 50x50km: 4.0614%.
Square area 10x10 km:
 9.94%
 9.23%
 1.85%
 2.56%
 2.98%
 1.7%
 0.43%
 0.71%
 13.21%
 39.2%
 18.18%Square area 50x50 km:
 0.55%
 0.73%
 0.28%
 0.47%
 0.44%
 0.56%
 0.66%
 0.53%
 0.87%
 2.84%
 92.08%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
47° 8' 49.3" North, 2° 8' 11.3" West
46° 40' 0" North, 1° 25' 60" West
46° 10' 55.2" North, 0° 43' 48.8" West
Some cities around La Roche-sur-Yon sort by population:
• Les Sables-d’Olonne
		32.9 km =20.4 mi, 
234°
• Château-d’Olonne
		29.7 km =18.5 mi, 
232°
• Olonne-sur-Mer
		29.8 km =18.5 mi, 
240°
• Luçon
		31 km =19.3 mi, 
138°
• Chantonnay
		29.3 km =18.2 mi, 
85°
• Aizenay
		15.6 km =9.7 mi, 
301°
• Le Poiré-sur-Vie
		12.8 km =8 mi, 
333°
• Saint-Hilaire-de-Talmont
		25.4 km =15.8 mi, 
210°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016