Night Light of Tongren (Guizhou) from space (China) Src. Average luminocity for 10x10km area is 47.869% and for 50x50km: 4.1048%.
Square area 10x10 km:
 10.71%
 14.88%
 1.79%
 4.76%
 2.98%
 4.56%
 6.15%
 5.95%
 17.46%
 26.98%
 3.77%Square area 50x50 km:
 0.61%
 0.74%
 0.21%
 0.44%
 0.48%
 0.36%
 0.86%
 0.46%
 1.23%
 3.69%
 90.92%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
28° 20' 16.4" North, 108° 28' 55.8" East
27° 43' 2" North, 109° 11' 7" East
27° 5' 34.8" North, 109° 53' 18.3" East
Some cities around Tongren sort by population:
• Fenghuang
		47.4 km =29.5 mi, 
59°
• Huaihua
		82.4 km =51.2 mi, 
101°
• Qianzhou
		85.9 km =53.4 mi, 
38°
• Hongjiang
		104.7 km =65.1 mi, 
130°
• Anjiang
		100.7 km =62.6 mi, 
116°
• Shiqian
		96.8 km =60.1 mi, 
257°
• Qiancheng
		82.3 km =51.1 mi, 
135°
• Simenqian
		169.5 km =105.3 mi, 
98°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016