Night Light of Nāmakkal (Tamil Nadu) from space (India) Src. Average luminocity for 10x10km area is 55.1797% and for 50x50km: 14.4474%.
Square area 10x10 km:
 2.38%
 11.47%
 11.47%
 7.79%
 9.09%
 13.64%
 8.87%
 11.9%
 17.1%
 6.28%
 0%Square area 50x50 km:
 0.15%
 0.86%
 1.15%
 1.44%
 1.67%
 2.72%
 4.27%
 5.11%
 7.62%
 13.7%
 61.31%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
11° 54' 36.4" North, 77° 27' 43.6" East
11° 13' 16.5" North, 78° 9' 54.9" East
10° 31' 50.8" North, 78° 52' 6.1" East
Some cities around Nāmakkal sort by population:
• Karur
		30.7 km =19.1 mi, 
197°
• Rasipuram
		26.7 km =16.6 mi, 
4°
• Nāmagiripettai
		28.3 km =17.6 mi, 
23°
• Velur
		21.9 km =13.6 mi, 
234°
• Mohanūr
		18.2 km =11.3 mi, 
188°
• Kāttupputtūr
		26 km =16.2 mi, 
166°
• Erumaippatti
		15.9 km =9.9 mi, 
121°
• Puduppatti
		9.2 km =5.7 mi, 
146°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016