Night Light of Karumbākkam (Tamil Nadu) from space (India) Src. Average luminocity for 10x10km area is 19.7879% and for 50x50km: 37.4065%.
Square area 10x10 km:
 0%
 1.08%
 0.65%
 0%
 0%
 0.65%
 7.58%
 11.69%
 17.75%
 30.95%
 29.65%Square area 50x50 km:
 2.47%
 7.78%
 10.14%
 3.87%
 6.74%
 6.01%
 5.17%
 4.94%
 6.57%
 15.68%
 30.62%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
13° 23' 13.2" North, 79° 23' 16.7" East
12° 42' 7.3" North, 80° 5' 28" East
12° 0' 54.7" North, 80° 47' 39.2" East
Some cities around Karumbākkam sort by population:
• Tambaram
		25.1 km =15.6 mi, 
8°
• Chingleput
		12.5 km =7.8 mi, 
264°
• Gūduvāncheri
		16.3 km =10.1 mi, 
348°
• Injambakkam
		29.3 km =18.2 mi, 
35°
• Madambakkam
		17.4 km =10.8 mi, 
343°
• Vandalūr
		21.2 km =13.2 mi, 
356°
• Seven Pagodas
		14.3 km =8.9 mi, 
129°
• Singapperumālkovil
		11.1 km =6.9 mi, 
305°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016