Night Light of Māttūr (Tamil Nadu) from space (India) Src. Average luminocity for 10x10km area is 15.1948% and for 50x50km: 9.3381%.
Square area 10x10 km:
 0.43%
 5.63%
 2.38%
 1.08%
 0%
 0.87%
 3.03%
 2.16%
 3.03%
 9.52%
 71.86%Square area 50x50 km:
 0.13%
 1.18%
 1.09%
 1.07%
 0.91%
 1.5%
 2.36%
 2.46%
 3.96%
 6.87%
 78.47%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
12° 0' 36.3" North, 78° 29' 57.6" East
11° 19' 17.3" North, 79° 12' 8.8" East
10° 37' 52.4" North, 79° 54' 20.1" East
Some cities around Māttūr sort by population:
• Vriddhāchalam
		25.6 km =15.9 mi, 
31°
• Jayamkondacholapuram
		21.3 km =13.2 mi, 
124°
• Perambalur
		36.2 km =22.5 mi, 
254°
• Ariyalūr
		24.6 km =15.3 mi, 
214°
• Pennādam
		10.1 km =6.3 mi, 
24°
• Papanasam
		44.5 km =27.7 mi, 
170°
• Srīmushnam
		23.7 km =14.7 mi, 
68°
• Swāmimalai
		42.8 km =26.6 mi, 
161°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016