Night Light of Culfa (Nakhichevan) from space (Azerbaijan) Src. Average luminocity for 10x10km area is 35.3019% and for 50x50km: 3.9782%.
Square area 10x10 km:
 3.25%
 10.55%
 5.84%
 6.82%
 1.46%
 1.95%
 3.25%
 2.92%
 6.17%
 36.36%
 21.43%Square area 50x50 km:
 0.26%
 0.69%
 0.52%
 0.62%
 0.25%
 0.45%
 0.51%
 0.58%
 0.75%
 4.74%
 90.61%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
39° 29' 55.1" North, 44° 55' 35.4" East
38° 57' 14.3" North, 45° 37' 46.6" East
38° 24' 18.3" North, 46° 19' 57.9" East
Some cities around Culfa sort by population:
• Marand, IR
		59.3 km =36.8 mi, 
167°
• Nakhchivan
		34 km =21.1 mi, 
326°
• Kapan, AM
		72.7 km =45.2 mi, 
67°
• Qarah Ẕīā’ od Dīn, IR
		52.7 km =32.7 mi, 
262°
• Hats’avan, AM
		63.9 km =39.7 mi, 
27°
• Ordubad
		34.4 km =21.4 mi, 
98°
• Yaycı
		9 km =5.6 mi, 
99°
• Cahri
		47.6 km =29.6 mi, 
337°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016