Night Light of Obernai (Grand Est) from space (France) Src. Average luminocity for 10x10km area is 29.2685% and for 50x50km: 18.4702%.
Square area 10x10 km:
 4.12%
 5.11%
 2.84%
 3.84%
 3.84%
 1.28%
 2.27%
 3.98%
 9.66%
 42.19%
 20.88%Square area 50x50 km:
 4.3%
 4%
 1.34%
 1.28%
 1.64%
 1.69%
 1.7%
 2.94%
 5.22%
 12.92%
 62.97%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
48° 55' 38" North, 6° 46' 40.4" East
48° 27' 47.3" North, 7° 28' 51.6" East
47° 59' 41.1" North, 8° 11' 2.9" East
Some cities around Obernai sort by population:
• Illkirch-Graffenstaden
		18.7 km =11.6 mi, 
67°
• Lingolsheim
		18.2 km =11.3 mi, 
54°
• Molsheim
		8.6 km =5.3 mi, 
5°
• Erstein
		14.1 km =8.8 mi, 
108°
• Geispolsheim
		13.7 km =8.5 mi, 
64°
• Barr
		6.6 km =4.1 mi, 
201°
• Mutzig
		8.7 km =5.4 mi, 
347°
• Benfeld
		13.2 km =8.2 mi, 
141°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016