Night Light of Peranāmpattu (Tamil Nadu) from space (India) Src. Average luminocity for 10x10km area is 19.4545% and for 50x50km: 9.0922%.
Square area 10x10 km:
 0.65%
 2.6%
 2.81%
 3.25%
 1.95%
 2.16%
 5.19%
 3.68%
 2.81%
 6.49%
 68.4%Square area 50x50 km:
 0.09%
 1.05%
 1.12%
 0.63%
 0.88%
 1.38%
 2.31%
 2.97%
 3.92%
 8.93%
 76.71%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
13° 37' 7.1" North, 78° 0' 56.8" East
12° 56' 3.5" North, 78° 43' 8" East
12° 14' 53.1" North, 79° 25' 19.3" East
Some cities around Peranāmpattu sort by population:
• Ambur
		15.9 km =9.9 mi, 
180°
• Gudiyatham
		16.8 km =10.4 mi, 
85°
• Vaniyambadi
		30.1 km =18.7 mi, 
200°
• Palmaner
		29.7 km =18.5 mi, 
5°
• Jalārpet
		43.5 km =27 mi, 
201°
• Pallikondai
		24.5 km =15.2 mi, 
97°
• Alangāyam
		34.9 km =21.7 mi, 
174°
• Odugattūr
		25.7 km =16 mi, 
136°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016