Night Light of Cepu (Central Java) from space (Indonesia) Src. Average luminocity for 10x10km area is 38.7294% and for 50x50km: 13.4001%.
Square area 10x10 km:
 1.3%
 6.71%
 5.19%
 4.76%
 5.63%
 6.49%
 11.69%
 11.47%
 9.31%
 27.06%
 10.39%Square area 50x50 km:
 0.69%
 2.67%
 1.73%
 1.13%
 1.33%
 1.55%
 3.83%
 3.4%
 3.41%
 8.63%
 71.63%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
6° 26' 57.6" South, 110° 53' 14.9" East
7° 8' 51" South, 111° 35' 26.2" East
7° 50' 40.6" South, 112° 17' 37.4" East
Some cities around Cepu sort by population:
• Madiun
		54.1 km =33.6 mi, 
187°
• Bojonegoro
		32.1 km =19.9 mi, 
90°
• Tuban
		59.3 km =36.8 mi, 
62°
• Nganjuk
		61.5 km =38.2 mi, 
145°
• Blora
		27.4 km =17 mi, 
316°
• Rembangan
		56.5 km =35.1 mi, 
330°
• Lasem
		52.9 km =32.9 mi, 
343°
• Ngawi
		32.7 km =20.3 mi, 
209°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016