Night Light of Horbourg-Wihr (Grand Est) from space (France) Src. Average luminocity for 10x10km area is 40.5461% and for 50x50km: 11.399%.
Square area 10x10 km:
 10.57%
 11.46%
 3.42%
 4.32%
 1.19%
 1.79%
 2.53%
 3.57%
 21.73%
 17.41%
 22.02%Square area 50x50 km:
 1.28%
 1.83%
 0.95%
 1.46%
 1.18%
 1.27%
 1.34%
 1.44%
 2.87%
 9.76%
 76.62%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
48° 32' 55.2" North, 6° 41' 26.4" East
48° 4' 51.8" North, 7° 23' 37.7" East
47° 36' 33" North, 8° 5' 48.9" East
Some cities around Horbourg-Wihr sort by population:
• Colmar
		2.8 km =1.7 mi, 
269°
• Sélestat
		20.5 km =12.7 mi, 
11°
• Breisach am Rhein, DE
		15 km =9.3 mi, 
110°
• Guebwiller
		23.3 km =14.5 mi, 
218°
• Wintzenheim
		7.7 km =4.8 mi, 
263°
• Ihringen, DE
		19.3 km =12 mi, 
102°
• Vogtsburg, DE
		18.5 km =11.5 mi, 
84°
• Munster
		19.4 km =12.1 mi, 
256°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016