Night Light of Purbalingga (Central Java) from space (Indonesia) Src. Average luminocity for 10x10km area is 22.5087% and for 50x50km: 6.9375%.
Square area 10x10 km:
 0.65%
 0.22%
 2.6%
 2.16%
 0.43%
 10.39%
 4.76%
 9.09%
 9.31%
 15.37%
 45.02%Square area 50x50 km:
 0.21%
 0.4%
 1.03%
 0.86%
 0.92%
 1.67%
 1.59%
 1.39%
 2.21%
 5%
 84.72%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
6° 41' 24.9" South, 108° 39' 38.8" East
7° 23' 17" South, 109° 21' 50" East
8° 5' 5.2" South, 110° 4' 1.3" East
Some cities around Purbalingga sort by population:
• Purwokerto
		14.7 km =9.1 mi, 
255°
• Sokaraja
		11.4 km =7.1 mi, 
227°
• Banyumas
		16 km =9.9 mi, 
208°
• Baturaden
		19 km =11.8 mi, 
301°
• Wangon
		37 km =23 mi, 
247°
• Gombong
		29.5 km =18.3 mi, 
145°
• Randudongkal
		32.5 km =20.2 mi, 
352°
• Kroya
		30.2 km =18.8 mi, 
205°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016