Night Light of Tercan (Erzincan) from space (Turkey) Src. Average luminocity for 10x10km area is 4.8452% and for 50x50km: 0.5395%.
Square area 10x10 km:
 0.85%
 0.51%
 0%
 1.36%
 0%
 2.55%
 0.85%
 0%
 0%
 0%
 93.88%Square area 50x50 km:
 0.03%
 0.02%
 0.05%
 0.18%
 0.01%
 0.15%
 0.17%
 0.08%
 0.08%
 0%
 99.23%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
40° 18' 55.3" North, 39° 40' 29" East
39° 46' 37.5" North, 40° 22' 40.2" East
39° 14' 4.5" North, 41° 4' 51.5" East
Some cities around Tercan sort by population:
• Erzincan
		76 km =47.2 mi, 
266°
• Cimin
		58.4 km =36.3 mi, 
262°
• Bayburt
		54.9 km =34.1 mi, 
346°
• Aşkale
		31.4 km =19.5 mi, 
59°
• Ilıca
		64.1 km =39.8 mi, 
72°
• Karlıova
		76.3 km =47.4 mi, 
135°
• Aydıntepe
		70.3 km =43.7 mi, 
343°
• Pazaryolu
		77.9 km =48.4 mi, 
25°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016