Night Light of Valence (Auvergne-Rhône-Alpes) from space (France) Src. Average luminocity for 10x10km area is 66.046% and for 50x50km: 11.0181%.
Square area 10x10 km:
 18.89%
 21.11%
 6.35%
 4.13%
 5.4%
 6.67%
 9.05%
 10%
 9.52%
 8.89%
 0%Square area 50x50 km:
 1.46%
 2.22%
 0.97%
 1.11%
 1.17%
 1.21%
 1.55%
 1.43%
 3.07%
 9.76%
 76.07%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
45° 25' 16.6" North, 4° 12' 23.2" East
44° 55' 32.2" North, 4° 54' 34.4" East
44° 25' 32.2" North, 5° 36' 45.7" East
Some cities around Valence sort by population:
• Bourg-lès-Valence
		2.7 km =1.7 mi, 
333°
• Guilherand-Granges
		2.9 km =1.8 mi, 
285°
• Tournon-sur-Rhône
		16.8 km =10.4 mi, 
339°
• Bourg-de-Péage
		16.1 km =10 mi, 
43°
• Portes-lès-Valence
		6.2 km =3.9 mi, 
206°
• Saint-Péray
		5.7 km =3.5 mi, 
296°
• Chabeuil
		8.8 km =5.5 mi, 
110°
• Tain-l’Hermitage
		16.2 km =10.1 mi, 
344°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016