Night Light of Altdorf (Bavaria) from space (Germany) Src. Average luminocity for 10x10km area is 4.3543% and for 50x50km: 10.1267%.
Square area 10x10 km:
 0.27%
 0.27%
 0.53%
 0.4%
 0.13%
 1.74%
 1.74%
 0.8%
 0.4%
 0.94%
 92.78%Square area 50x50 km:
 2.23%
 1.84%
 0.79%
 0.89%
 1.24%
 1.26%
 1.29%
 1.6%
 2.67%
 4.61%
 81.59%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
49° 50' 28.2" North, 10° 39' 15" East
49° 23' 8.2" North, 11° 21' 26.3" East
48° 55' 32.7" North, 12° 3' 37.5" East
Some cities around Altdorf sort by population:
• Neumarkt in der Oberpfalz
		14 km =8.7 mi, 
146°
• Feucht
		10.4 km =6.5 mi, 
264°
• Röthenbach an der Pegnitz
		13.7 km =8.5 mi, 
322°
• Burgthann
		5 km =3.1 mi, 
221°
• Schwarzenbruck
		8.8 km =5.5 mi, 
249°
• Postbauer-Heng
		8.9 km =5.5 mi, 
180°
• Leinburg
		8.1 km =5 mi, 
335°
• Pyrbaum
		11.2 km =7 mi, 
207°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016