Night Light of Yicheng (Jiangsu) from space (China) Src. Average luminocity for 10x10km area is 75.6119% and for 50x50km: 23.3172%.
Square area 10x10 km:
 18.88%
 18.88% 21.33%
 21.33% 7.69%
 7.69% 6.82%
 6.82% 14.34%
 14.34% 17.48%
 17.48% 8.39%
 8.39% 4.37%
 4.37% 0.7%
 0.7% 0%
 0% 0%
 0%Square area 50x50 km:
 1.26%
 1.26% 1.99%
 1.99% 2.95%
 2.95% 2.61%
 2.61% 4.23%
 4.23% 5.34%
 5.34% 6%
 6% 4.75%
 4.75% 9.47%
 9.47% 16.38%
 16.38% 45.02%
 45.02%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
31° 57' 32.7" North, 119° 7' 1.3" East
31° 21' 38.1" North, 119° 49' 12.6" East
30° 45' 29.8" North, 120° 31' 23.8" East
Some cities around Yicheng sort by population:
• Suzhou
		73.9 km =45.9 mi,  94°
94°
• Wuxi
		50.1 km =31.1 mi,  62°
62°
• Changzhou
		47.6 km =29.6 mi,  15°
15°
• Huzhou
		60.4 km =37.5 mi,  154°
154°
• Licheng
		32.8 km =20.4 mi,  283°
283°
• Zhicheng
		40.1 km =24.9 mi,  167°
167°
• Mudu
		67.4 km =41.9 mi,  99°
99°
• Hutang
		36.8 km =22.9 mi,  301°
301°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016