Night Light of Chiang Rai from space (Thailand) Src. Average luminocity for 10x10km area is 78.6212% and for 50x50km: 9.9324%.
Square area 10x10 km:
 15.37%
 34.2%
 10.61%
 7.79%
 6.49%
 10.17%
 7.14%
 6.06%
 2.16%
 0%
 0%Square area 50x50 km:
 0.7%
 2.07%
 1.39%
 0.75%
 1.3%
 1.22%
 2.39%
 1.73%
 2.91%
 6.1%
 79.45%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
20° 34' 5.8" North, 99° 7' 45.8" East
19° 54' 30.9" North, 99° 49' 57" East
19° 14' 46" North, 100° 32' 8.3" East
Some cities around Chiang Rai sort by population:
• Tachilek, MM
		60.1 km =37.3 mi, 
4°
• Mae Chan
		26.6 km =16.5 mi, 
4°
• Mae Sai
		58.5 km =36.4 mi, 
4°
• Ban Houakhoua, LA
		75 km =46.6 mi, 
59°
• Pa Daet
		47.9 km =29.8 mi, 
159°
• Ban Houayxay, LA
		73.1 km =45.4 mi, 
56°
• Fang
		64.6 km =40.1 mi, 
270°
• Mae Chai
		62.6 km =38.9 mi, 
181°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016