Night Light of Gundelfingen (Baden-Württemberg) from space (Germany) Src. Average luminocity for 10x10km area is 36.8139% and for 50x50km: 7.6552%.
Square area 10x10 km:
 9.09%
 8.95%
 3.13%
 4.55%
 2.56%
 1.85%
 2.7%
 2.13%
 11.93%
 30.82%
 22.3%Square area 50x50 km:
 0.91%
 1.08%
 0.44%
 1.01%
 0.91%
 1.1%
 1.21%
 1.02%
 1.54%
 5.44%
 85.35%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
48° 30' 37.5" North, 7° 9' 45.3" East
48° 2' 32.9" North, 7° 51' 56.5" East
47° 34' 12.8" North, 8° 34' 7.8" East
Some cities around Gundelfingen sort by population:
• Freiburg
		5.3 km =3.3 mi, 
190°
• Emmendingen
		8.8 km =5.5 mi, 
354°
• Waldkirch
		9.4 km =5.8 mi, 
50°
• Denzlingen
		3 km =1.9 mi, 
25°
• Teningen
		10.5 km =6.5 mi, 
337°
• Kirchzarten
		10.5 km =6.5 mi, 
143°
• Bötzingen
		11.1 km =6.9 mi, 
289°
• Umkirch
		7.4 km =4.6 mi, 
262°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016