Night Light of Dreieich (Hesse) from space (Germany) Src. Average luminocity for 10x10km area is 41.5% and for 50x50km: 30.0279%.
Square area 10x10 km:
 6.58%
 5.74%
 6.16%
 3.5%
 3.64%
 4.48%
 5.18%
 8.96%
 33.75%
 21.15%
 0.84%Square area 50x50 km:
 5.98%
 5.85%
 2.6%
 2.98%
 3.78%
 2.95%
 4.08%
 4.93%
 10.91%
 18.5%
 37.44%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
50° 28' 10.6" North, 7° 59' 34.8" East
50° 1' 11.9" North, 8° 41' 46" East
49° 33' 57.9" North, 9° 23' 57.3" East
Some cities around Dreieich sort by population:
• Langen
		3.9 km =2.4 mi, 
210°
• Neu Isenburg
		3.2 km =2 mi, 
357°
• Dietzenbach
		5.9 km =3.7 mi, 
101°
• Mörfelden-Walldorf
		8.5 km =5.3 mi, 
250°
• Niederrad
		8.5 km =5.3 mi, 
325°
• Heusenstamm
		8.5 km =5.3 mi, 
62°
• Egelsbach
		6.2 km =3.9 mi, 
201°
• Erzhausen
		8 km =5 mi, 
205°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016