Night Light of Friedrichsdorf (Hesse) from space (Germany) Src. Average luminocity for 10x10km area is 27.7326% and for 50x50km: 21.9491%.
Square area 10x10 km:
 4.01%
 4.41%
 2.54%
 2.81%
 2.54%
 2.67%
 3.61%
 6.28%
 12.97%
 25.8%
 32.35%Square area 50x50 km:
 4.65%
 4.56%
 1.95%
 2.09%
 2.66%
 2.29%
 3.16%
 4.14%
 7.19%
 8.69%
 58.61%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
50° 41' 49.6" North, 7° 56' 22.9" East
50° 14' 58.6" North, 8° 38' 34.1" East
49° 47' 52.4" North, 9° 20' 45.4" East
Some cities around Friedrichsdorf sort by population:
• Bad Homburg vor der Höhe
		3.1 km =1.9 mi, 
214°
• Oberursel
		6.6 km =4.1 mi, 
224°
• Bad Vilbel
		10.4 km =6.5 mi, 
139°
• Karben
		9.4 km =5.8 mi, 
103°
• Kronberg
		11.2 km =7 mi, 
229°
• Rosbach vor der Höhe
		6.8 km =4.2 mi, 
29°
• Steinbach am Taunus
		10.4 km =6.5 mi, 
208°
• Wehrheim
		7.8 km =4.8 mi, 
315°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016