Night Light of Heroldsbach (Bavaria) from space (Germany) Src. Average luminocity for 10x10km area is 13.3102% and for 50x50km: 9.3938%.
Square area 10x10 km:
 1.6%
 3.74%
 0%
 0.53%
 1.6%
 2.01%
 1.74%
 2.14%
 1.07%
 9.49%
 76.07%Square area 50x50 km:
 1.38%
 1.53%
 0.92%
 0.83%
 1.1%
 1.34%
 1.57%
 1.34%
 3.16%
 6%
 80.84%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
50° 8' 46.1" North, 10° 17' 44.5" East
49° 41' 36.3" North, 10° 59' 55.8" East
49° 14' 11.2" North, 11° 42' 7" East
Some cities around Heroldsbach sort by population:
• Erlangen
		11.4 km =7.1 mi, 
176°
• Forchheim
		5.1 km =3.2 mi, 
58°
• Höchstadt an der Aisch
		13.4 km =8.3 mi, 
276°
• Hirschaid
		13.9 km =8.6 mi, 
357°
• Neunkirchen am Brand
		13.1 km =8.1 mi, 
133°
• Baiersdorf
		4.8 km =3 mi, 
145°
• Eggolsheim
		9.4 km =5.8 mi, 
26°
• Hemhofen
		4.8 km =3 mi, 
256°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016