Night Light of Pong (Phayao) from space (Thailand) Src. Average luminocity for 10x10km area is 1.6515% and for 50x50km: 0.5339%.
Square area 10x10 km:
 0%
 0%
 0%
 0%
 0.87%
 0%
 0.22%
 1.95%
 0.43%
 0.87%
 95.67%Square area 50x50 km:
 0%
 0.02%
 0.02%
 0.07%
 0.06%
 0.08%
 0.35%
 0.2%
 0.16%
 0.23%
 98.81%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
19° 48' 43.8" North, 99° 34' 19.6" East
19° 8' 57.5" North, 100° 16' 30.8" East
18° 29' 1.6" North, 100° 58' 42.1" East
Some cities around Pong sort by population:
• Nan
		66.8 km =41.5 mi, 
127°
• Dok Kham Tai
		29.6 km =18.4 mi, 
272°
• Phayao
		41.9 km =26 mi, 
276°
• Chiang Kham
		41.7 km =25.9 mi, 
3°
• Pa Daet
		49.4 km =30.7 mi, 
323°
• Chiang Klang
		63.6 km =39.5 mi, 
75°
• Rong Kwang
		90.2 km =56 mi, 
177°
• Mae Chai
		53.1 km =33 mi, 
294°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016