Night Light of Jiangyan (Jiangsu) from space (China) Src. Average luminocity for 10x10km area is 58.4139% and for 50x50km: 17.849%.
Square area 10x10 km:
 10.26%
 10.26% 11.9%
 11.9% 9.52%
 9.52% 10.07%
 10.07% 7.51%
 7.51% 9.16%
 9.16% 8.61%
 8.61% 7.69%
 7.69% 11.9%
 11.9% 13%
 13% 0.37%
 0.37%Square area 50x50 km:
 2.34%
 2.34% 2.14%
 2.14% 2.77%
 2.77% 2.65%
 2.65% 2.92%
 2.92% 2.98%
 2.98% 2.61%
 2.61% 2.82%
 2.82% 5.26%
 5.26% 8.92%
 8.92% 64.59%
 64.59%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
33° 5' 49.6" North, 119° 26' 22.8" East
32° 30' 22" North, 120° 8' 34" East
31° 54' 40.3" North, 120° 50' 45.3" East
Some cities around Jiangyan sort by population:
• Zhenjiang
		72.5 km =45 mi,  243°
243°
• Taizhou
		22.1 km =13.7 mi,  265°
265°
• Yangzhou
		67.4 km =41.9 mi,  259°
259°
• Dongtai
		41.5 km =25.8 mi,  22°
22°
• Xinghua
		56.1 km =34.9 mi,  329°
329°
• Gaoyou
		72.8 km =45.2 mi,  295°
295°
• Xiannü
		55.3 km =34.4 mi,  260°
260°
• Taixing
		39.6 km =24.6 mi,  197°
197°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016