Night Light of Mae Chai (Phayao) from space (Thailand) Src. Average luminocity for 10x10km area is 6.4897% and for 50x50km: 3.9859%.
Square area 10x10 km:
 0%
 0.83%
 0.83%
 0.83%
 0.62%
 1.45%
 2.07%
 2.48%
 1.24%
 1.03%
 88.64%Square area 50x50 km:
 0.12%
 0.63%
 0.37%
 0.57%
 0.4%
 0.45%
 1.11%
 0.86%
 0.94%
 3.16%
 91.39%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
20° 0' 28.9" North, 99° 6' 39.2" East
19° 20' 45.5" North, 99° 48' 50.4" East
18° 40' 52.4" North, 100° 31' 1.7" East
Some cities around Mae Chai sort by population:
• Chiang Rai
		62.6 km =38.9 mi, 
1°
• San Kamphaeng
		99 km =61.5 mi, 
227°
• Dok Kham Tai
		27.8 km =17.3 mi, 
137°
• Phayao
		18.4 km =11.4 mi, 
158°
• Pong
		53.1 km =33 mi, 
114°
• Chiang Kham
		54.6 km =33.9 mi, 
68°
• Pa Daet
		25.7 km =16 mi, 
46°
• Fang
		89.3 km =55.5 mi, 
315°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016