Night Light of Tortum (Erzurum) from space (Turkey) Src. Average luminocity for 10x10km area is 4.0136% and for 50x50km: 0.765%.
Square area 10x10 km:
 0%
 0%
 0.85%
 0.51%
 1.53%
 0.85%
 1.02%
 1.36%
 0%
 0%
 93.88%Square area 50x50 km:
 0.01%
 0.01%
 0.15%
 0.1%
 0.09%
 0.21%
 0.18%
 0.24%
 0.23%
 0.18%
 98.61%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
40° 49' 23.3" North, 40° 50' 16.2" East
40° 17' 20.1" North, 41° 32' 27.5" East
39° 45' 1.7" North, 42° 14' 38.7" East
Some cities around Tortum sort by population:
• Erzurum
		47.9 km =29.8 mi, 
207°
• Pasinler
		36.1 km =22.4 mi, 
162°
• Oltu
		46.9 km =29.1 mi, 
53°
• Ilıca
		53.7 km =33.4 mi, 
224°
• İspir
		51 km =31.7 mi, 
294°
• Narman
		27.8 km =17.3 mi, 
77°
• Yusufeli
		59.1 km =36.7 mi, 
359°
• Uzundere
		27 km =16.8 mi, 
359°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016