Night Light of Herzogenbuchsee (Bern) from space (Switzerland) Src. Average luminocity for 10x10km area is 9.8839% and for 50x50km: 11.3402%.
Square area 10x10 km:
 0.45%
 0.45%
 0.6%
 1.93%
 0.89%
 2.53%
 0.15%
 2.08%
 1.93%
 3.27%
 85.71%Square area 50x50 km:
 0.87%
 1.49%
 0.89%
 1.12%
 1.68%
 1.71%
 1.83%
 2.02%
 3.42%
 10.91%
 74.07%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
47° 39' 49.1" North, 7° 0' 11.1" East
47° 11' 16.6" North, 7° 42' 22.3" East
46° 42' 28.7" North, 8° 24' 33.6" East
Some cities around Herzogenbuchsee sort by population:
• Solothurn
		13 km =8.1 mi, 
279°
• Burgdorf
		15.5 km =9.6 mi, 
202°
• Langenthal
		7.4 km =4.6 mi, 
65°
• Zuchwil
		10.7 km =6.6 mi, 
278°
• Biberist
		10.9 km =6.8 mi, 
265°
• Derendingen
		9 km =5.6 mi, 
277°
• Balsthal
		14.3 km =8.9 mi, 
356°
• Kirchberg
		14.7 km =9.1 mi, 
219°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016