Night Light of Lengshuitan (Hunan) from space (China) Src. Average luminocity for 10x10km area is 35.322% and for 50x50km: 4.2203%.
Square area 10x10 km:
 5.68%
 5.11%
 4.17%
 4.36%
 6.06%
 6.25%
 5.11%
 3.41%
 6.63%
 29.73%
 23.48%Square area 50x50 km:
 0.61%
 0.54%
 0.42%
 0.47%
 0.62%
 0.56%
 0.66%
 0.47%
 0.63%
 3.8%
 91.23%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
27° 2' 20.8" North, 110° 53' 32.9" East
26° 24' 40" North, 111° 35' 44.1" East
25° 46' 46.7" North, 112° 17' 55.4" East
Some cities around Lengshuitan sort by population:
• Hengyang
		114.8 km =71.3 mi, 
62°
• Leiyang
		125.8 km =78.2 mi, 
90°
• Yongfeng
		127.2 km =79 mi, 
27°
• Wuxi
		32.5 km =20.2 mi, 
53°
• Hongqiao
		64.6 km =40.1 mi, 
52°
• Bojia
		37.6 km =23.4 mi, 
80°
• Shijiang
		109.1 km =67.8 mi, 
313°
• Liuduzhai
		124.8 km =77.5 mi, 
328°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016