Night Light of Ambur (Tamil Nadu) from space (India) Src. Average luminocity for 10x10km area is 44.6472% and for 50x50km: 12.9197%.
Square area 10x10 km:
 1.73%
 10.61%
 9.31%
 3.9%
 4.98%
 9.09%
 4.98%
 13.85%
 12.34%
 26.84%
 2.38%Square area 50x50 km:
 0.21%
 1.49%
 1.53%
 0.97%
 1.46%
 2.16%
 3.56%
 4.09%
 5.46%
 12.15%
 66.92%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
13° 28' 34.9" North, 78° 0' 48" East
12° 47' 29.9" North, 78° 42' 59.2" East
12° 6' 18.1" North, 79° 25' 10.5" East
Some cities around Ambur sort by population:
• Gudiyatham
		24.2 km =15 mi, 
44°
• Vaniyambadi
		16.1 km =10 mi, 
220°
• Peranāmpattu
		15.9 km =9.9 mi, 
0°
• Jalārpet
		29.1 km =18.1 mi, 
212°
• Pallikondai
		27.6 km =17.1 mi, 
62°
• Kuppam
		40.9 km =25.4 mi, 
263°
• Alangāyam
		19.2 km =11.9 mi, 
168°
• Odugattūr
		18.3 km =11.4 mi, 
98°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016