Night Light of Gushu (Anhui) from space (China) Src. Average luminocity for 10x10km area is 60.3916% and for 50x50km: 27.3144%.
Square area 10x10 km:
 9.97%
 9.97% 14.34%
 14.34% 8.57%
 8.57% 8.74%
 8.74% 7.17%
 7.17% 8.92%
 8.92% 13.46%
 13.46% 8.39%
 8.39% 15.56%
 15.56% 4.9%
 4.9% 0%
 0%Square area 50x50 km:
 5.23%
 5.23% 5.32%
 5.32% 3.32%
 3.32% 3.28%
 3.28% 3.35%
 3.35% 3.84%
 3.84% 4.06%
 4.06% 4.37%
 4.37% 6.28%
 6.28% 12.44%
 12.44% 48.51%
 48.51%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
32° 9' 27.9" North, 117° 46' 42.1" East
31° 33' 38" North, 118° 28' 53.3" East
30° 57' 34.2" North, 119° 11' 4.6" East
Some cities around Gushu sort by population:
• Nanjing
		62.4 km =38.8 mi,  26°
26°
• Wuhu
		26.9 km =16.7 mi,  202°
202°
• Wusong
		94.9 km =59 mi,  224°
224°
• Chuzhou
		86.4 km =53.7 mi,  348°
348°
• Chaohu
		58.4 km =36.3 mi,  274°
274°
• Xuanzhou
		72.4 km =45 mi,  158°
158°
• Xiaolingwei
		63.2 km =39.3 mi,  33°
33°
• Hutang
		95.6 km =59.4 mi,  91°
91°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016