Night Light of Thakhèk (Khammouan) from space (Laos) Src. Average luminocity for 10x10km area is 34.7893% and for 50x50km: 6.22%.
Square area 10x10 km:
 1.86%
 8.68%
 5.99%
 6.2%
 2.69%
 3.72%
 4.75%
 5.37%
 10.33%
 23.35%
 27.07%Square area 50x50 km:
 0.3%
 1.32%
 0.86%
 0.92%
 0.41%
 0.5%
 1.03%
 1.14%
 1.99%
 4.43%
 87.1%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
18° 4' 47.8" North, 104° 7' 39.2" East
17° 24' 37" North, 104° 49' 50.4" East
16° 44' 17.3" North, 105° 32' 1.7" East
Some cities around Thakhèk sort by population:
• Sakon Nakhon, TH
		77.7 km =48.3 mi, 
249°
• Savannakhet
		93.7 km =58.2 mi, 
184°
• Mukdahan, TH
		96.8 km =60.1 mi, 
186°
• Nakhon Phanom, TH
		5.5 km =3.4 mi, 
270°
• Seka, TH
		109.2 km =67.9 mi, 
301°
• Khao Wong, TH
		111.5 km =69.3 mi, 
224°
• That Phanom, TH
		54.2 km =33.7 mi, 
193°
• Na Wa, TH
		77.9 km =48.4 mi, 
276°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016