Night Light of Kātpādi (Tamil Nadu) from space (India) Src. Average luminocity for 10x10km area is 74.8831% and for 50x50km: 23.3972%.
Square area 10x10 km:
 9.96%
 9.96% 26.19%
 26.19% 19.7%
 19.7% 7.58%
 7.58% 12.12%
 12.12% 8.01%
 8.01% 6.06%
 6.06% 4.11%
 4.11% 5.84%
 5.84% 0.43%
 0.43% 0%
 0%Square area 50x50 km:
 0.65%
 0.65% 3.47%
 3.47% 4.11%
 4.11% 2.06%
 2.06% 3.02%
 3.02% 5.06%
 5.06% 6.29%
 6.29% 6.36%
 6.36% 7.5%
 7.5% 13%
 13% 48.47%
 48.47%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
13° 39' 13.5" North, 78° 26' 32.6" East
12° 58' 10.2" North, 79° 8' 43.9" East
12° 17' 0.2" North, 79° 50' 55.1" East
Some cities around Kātpādi sort by population:
• Vellore
		5.9 km =3.7 mi,  193°
193°
• Gudiyatham
		29.6 km =18.4 mi,  264°
264°
• Arcot
		20.1 km =12.5 mi,  110°
110°
• Rāmāpuram
		15.2 km =9.4 mi,  15°
15°
• Walajapet
		24.4 km =15.2 mi,  101°
101°
• Sholinghur
		34 km =21.1 mi,  60°
60°
• Pallikondai
		23.1 km =14.4 mi,  251°
251°
• Pudūr
		3.2 km =2 mi,  356°
356°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016