Night Light of Oltu (Erzurum) from space (Turkey) Src. Average luminocity for 10x10km area is 12.5276% and for 50x50km: 1.0977%.
Square area 10x10 km:
 2.44%
 1.46%
 2.6%
 0.32%
 1.95%
 1.62%
 1.3%
 1.14%
 0.81%
 1.79%
 84.58%Square area 50x50 km:
 0.15%
 0.08%
 0.16%
 0.15%
 0.26%
 0.08%
 0.13%
 0.19%
 0.14%
 0.15%
 98.51%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 4' 18" North, 41° 17' 2.8" East
40° 32' 22" North, 41° 59' 14" East
40° 0' 10.7" North, 42° 41' 25.3" East
Some cities around Oltu sort by population:
• Sarıkamış
		56 km =34.8 mi, 
114°
• Horasan
		57.6 km =35.8 mi, 
164°
• Göle
		59 km =36.7 mi, 
62°
• Narman
		24.2 km =15 mi, 
206°
• Tortum
		46.9 km =29.1 mi, 
233°
• Yusufeli
		49.1 km =30.5 mi, 
309°
• Uzundere
		37.9 km =23.5 mi, 
268°
• Ardanuç
		65.7 km =40.8 mi, 
5°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016