Night Light of Forchheim (Bavaria) from space (Germany) Src. Average luminocity for 10x10km area is 13.4492% and for 50x50km: 8.0565%.
Square area 10x10 km:
 1.6%
 4.14%
 0.13%
 0%
 1.6%
 1.47%
 1.2%
 2.14%
 2.14%
 7.75%
 77.81%Square area 50x50 km:
 1.01%
 1.17%
 0.76%
 0.69%
 0.87%
 1.18%
 1.31%
 1.28%
 3.18%
 5.97%
 82.58%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
50° 10' 12.1" North, 10° 21' 20.3" East
49° 43' 3.1" North, 11° 3' 31.6" East
49° 15' 38.9" North, 11° 45' 42.8" East
Some cities around Forchheim sort by population:
• Erlangen
		14.5 km =9 mi, 
194°
• Hirschaid
		12.2 km =7.6 mi, 
335°
• Neunkirchen am Brand
		12.8 km =8 mi, 
156°
• Baiersdorf
		6.8 km =4.2 mi, 
193°
• Ebermannstadt
		11.3 km =7 mi, 
51°
• Eggolsheim
		5.8 km =3.6 mi, 
358°
• Hemhofen
		9.8 km =6.1 mi, 
247°
• Heroldsbach
		5.1 km =3.2 mi, 
238°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016