Night Light of Tha Ruea (Phra Nakhon Si Ayutthaya) from space (Thailand) Src. Average luminocity for 10x10km area is 40.8939% and for 50x50km: 34.3728%.
Square area 10x10 km:
 1.95%
 1.95% 2.16%
 2.16% 9.31%
 9.31% 5.19%
 5.19% 9.74%
 9.74% 10.39%
 10.39% 4.98%
 4.98% 10.39%
 10.39% 10.39%
 10.39% 32.47%
 32.47% 3.03%
 3.03%Square area 50x50 km:
 2.11%
 2.11% 2.55%
 2.55% 5.87%
 5.87% 4.87%
 4.87% 6.62%
 6.62% 5.88%
 5.88% 7.99%
 7.99% 8.8%
 8.8% 13.71%
 13.71% 21.17%
 21.17% 20.45%
 20.45%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
15° 14' 48.7" North, 100° 1' 22.3" East
14° 34' 2.6" North, 100° 43' 33.5" East
13° 53' 9" North, 101° 25' 44.8" East
Some cities around Tha Ruea sort by population:
• Phra Nakhon Si Ayutthaya
		28.8 km =17.9 mi,  213°
213°
• Saraburi
		20.9 km =13 mi,  100°
100°
• Lop Buri
		26.8 km =16.7 mi,  343°
343°
• Phra Phutthabat
		19.1 km =11.9 mi,  23°
23°
• Kaeng Khoi
		29.3 km =18.2 mi,  85°
85°
• Ban Mo
		5.3 km =3.3 mi,  1°
1°
• Nakhon Luang
		17.2 km =10.7 mi,  227°
227°
• Ban Thai Tan
		26.4 km =16.4 mi,  283°
283°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016