Night Light of Chingleput (Tamil Nadu) from space (India) Src. Average luminocity for 10x10km area is 54.961% and for 50x50km: 34.5198%.
Square area 10x10 km:
 2.6%
 8.87%
 12.77%
 7.36%
 9.52%
 15.8%
 12.77%
 8.66%
 15.58%
 6.06%
 0%Square area 50x50 km:
 1.28%
 5.93%
 9.33%
 4.01%
 6.24%
 6.19%
 5.66%
 5.79%
 7.35%
 16.23%
 32.01%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
13° 22' 36.6" North, 79° 16' 24.6" East
12° 41' 30.6" North, 79° 58' 35.8" East
12° 0' 18" North, 80° 40' 47.1" East
Some cities around Chingleput sort by population:
• Gūduvāncheri
		19.3 km =12 mi, 
28°
• Madurāntakam
		22.4 km =13.9 mi, 
206°
• Madambakkam
		19.4 km =12.1 mi, 
23°
• Vandalūr
		25 km =15.5 mi, 
26°
• Seven Pagodas
		24.8 km =15.4 mi, 
108°
• Karumbākkam
		12.5 km =7.8 mi, 
84°
• Wallajahbad
		19.9 km =12.4 mi, 
303°
• Singapperumālkovil
		8.2 km =5.1 mi, 
24°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016