Night Light of Gaoyou (Jiangsu) from space (China) Src. Average luminocity for 10x10km area is 56.993% and for 50x50km: 5.4427%.
Square area 10x10 km:
 11.01%
 11.01% 11.89%
 11.89% 7.17%
 7.17% 8.57%
 8.57% 11.89%
 11.89% 11.71%
 11.71% 4.2%
 4.2% 2.45%
 2.45% 9.97%
 9.97% 17.48%
 17.48% 3.67%
 3.67%Square area 50x50 km:
 0.46%
 0.46% 0.53%
 0.53% 0.72%
 0.72% 0.68%
 0.68% 0.95%
 0.95% 1.15%
 1.15% 0.77%
 0.77% 0.9%
 0.9% 1.28%
 1.28% 3.23%
 3.23% 89.32%
 89.32%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
33° 22' 42.4" North, 118° 44' 19.3" East
32° 47' 21.6" North, 119° 26' 30.6" East
32° 11' 46.6" North, 120° 8' 41.8" East
Some cities around Gaoyou sort by population:
• Zhenjiang
		64.3 km =40 mi,  178°
178°
• Taizhou
		54.9 km =34.1 mi,  127°
127°
• Yangzhou
		43.6 km =27.1 mi,  180°
180°
• Zhenzhou
		62.1 km =38.6 mi,  204°
204°
• Xinghua
		40.3 km =25 mi,  65°
65°
• Xiannü
		41.7 km =25.9 mi,  164°
164°
• Baoying
		50.4 km =31.3 mi,  345°
345°
• Qinnan
		67.8 km =42.1 mi,  40°
40°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016