Night Light of Viriat (Auvergne-Rhône-Alpes) from space (France) Src. Average luminocity for 10x10km area is 23.4301% and for 50x50km: 4.2271%.
Square area 10x10 km:
 4.61%
 4.91%
 1.49%
 0.3%
 1.19%
 4.17%
 2.23%
 2.68%
 8.04%
 26.34%
 44.05%Square area 50x50 km:
 0.43%
 0.55%
 0.23%
 0.42%
 0.53%
 0.88%
 0.67%
 0.79%
 1.2%
 2.94%
 91.36%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
46° 44' 19.9" North, 4° 30' 45.1" East
46° 15' 17.4" North, 5° 12' 56.4" East
45° 45' 59.4" North, 5° 55' 7.6" East
Some cities around Viriat sort by population:
• Bourg-en-Bresse
		5.5 km =3.4 mi, 
171°
• Mâcon
		30.5 km =19 mi, 
282°
• Oyonnax
		34 km =21.1 mi, 
89°
• Ambérieu-en-Bugey
		34.5 km =21.4 mi, 
162°
• Meximieux
		38.6 km =24 mi, 
181°
• Charnay-lès-Mâcon
		33.6 km =20.9 mi, 
280°
• Péronnas
		8 km =5 mi, 
182°
• Belleville
		39.4 km =24.5 mi, 
245°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016