Night Light of Ortaköy (Mardin) from space (Turkey) Src. Average luminocity for 10x10km area is 10.1939% and for 50x50km: 10.6505%.
Square area 10x10 km:
 1.02%
 1.36%
 0.85%
 0.51%
 1.53%
 1.02%
 1.36%
 1.87%
 0.68%
 6.46%
 83.33%Square area 50x50 km:
 1.18%
 1.94%
 1.36%
 0.84%
 1.07%
 1.11%
 1.83%
 1.85%
 4.31%
 7.92%
 76.59%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
37° 46' 43.4" North, 40° 4' 53.9" East
37° 13' 15.2" North, 40° 47' 5.1" East
36° 39' 32.1" North, 41° 29' 16.4" East
Some cities around Ortaköy sort by population:
• Kızıltepe
		18.7 km =11.6 mi, 
258°
• Mardin
		10.9 km =6.8 mi, 
340°
• Yeşilli
		13.4 km =8.3 mi, 
12°
• Ad Darbāsīyah, SY
		20.2 km =12.6 mi, 
215°
• Kabala
		14 km =8.7 mi, 
5°
• Savur
		35.9 km =22.3 mi, 
13°
• Ömerli
		24.8 km =15.4 mi, 
37°
• Akarsu
		23.6 km =14.7 mi, 
88°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016