Night Light of Cheyyur (Tamil Nadu) from space (India) Src. Average luminocity for 10x10km area is 3.2996% and for 50x50km: 5.7831%.
Square area 10x10 km:
 0%
 0%
 0%
 0%
 0%
 0%
 1.65%
 3.1%
 2.69%
 2.07%
 90.5%Square area 50x50 km:
 0.1%
 0.44%
 0.83%
 0.49%
 0.65%
 1.06%
 1.46%
 1.69%
 1.69%
 5.66%
 85.93%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
13° 2' 7.5" North, 79° 17' 59.7" East
12° 20' 58.1" North, 80° 0' 10.9" East
11° 39' 42.3" North, 80° 42' 22.2" East
Some cities around Cheyyur sort by population:
• Tindivanam
		39.9 km =24.8 mi, 
251°
• Chingleput
		38.2 km =23.7 mi, 
355°
• Madurāntakam
		22.1 km =13.7 mi, 
324°
• Uttiramerūr
		39.7 km =24.7 mi, 
317°
• Marakkanam
		18.7 km =11.6 mi, 
200°
• Seven Pagodas
		36.6 km =22.7 mi, 
34°
• Karumbākkam
		40.3 km =25 mi, 
13°
• Singapperumālkovil
		45.6 km =28.3 mi, 
0°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016