Night Light of Heilsbronn (Bavaria) from space (Germany) Src. Average luminocity for 10x10km area is 3.9211% and for 50x50km: 9.8753%.
Square area 10x10 km:
 0.53%
 1.07%
 0.53%
 0%
 0.53%
 0.67%
 0.4%
 0.53%
 0%
 0.53%
 95.19%Square area 50x50 km:
 2.42%
 1.83%
 0.64%
 0.74%
 1.19%
 1.42%
 1.48%
 1.57%
 2.73%
 3.92%
 82.06%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
49° 47' 30.3" North, 10° 5' 3.4" East
49° 20' 8.6" North, 10° 47' 14.7" East
48° 52' 31.5" North, 11° 29' 25.9" East
Some cities around Heilsbronn sort by population:
• Ansbach
		14.5 km =9 mi, 
256°
• Oberasbach
		15.7 km =9.8 mi, 
51°
• Cadolzburg
		14.3 km =8.9 mi, 
19°
• Roßtal
		9.9 km =6.2 mi, 
47°
• Neuendettelsau
		5.8 km =3.6 mi, 
182°
• Windsbach
		10.2 km =6.3 mi, 
163°
• Dietenhofen
		10.1 km =6.3 mi, 
315°
• Petersaurach
		4.8 km =3 mi, 
214°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016