Night Light of Dongkan (Jiangsu) from space (China) Src. Average luminocity for 10x10km area is 34.5192% and for 50x50km: 3.949%.
Square area 10x10 km:
 4.72%
 4.72% 4.37%
 4.37% 4.9%
 4.9% 4.9%
 4.9% 5.24%
 5.24% 5.42%
 5.42% 5.77%
 5.77% 6.64%
 6.64% 3.15%
 3.15% 32.87%
 32.87% 22.03%
 22.03%Square area 50x50 km:
 0.36%
 0.36% 0.48%
 0.48% 0.46%
 0.46% 0.41%
 0.41% 0.47%
 0.47% 0.7%
 0.7% 0.74%
 0.74% 0.95%
 0.95% 0.61%
 0.61% 3.29%
 3.29% 91.54%
 91.54%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
34° 34' 50.3" North, 119° 7' 39.8" East
33° 59' 59" North, 119° 49' 51" East
33° 24' 53.3" North, 120° 32' 2.3" East
Some cities around Dongkan sort by population:
• Yancheng
		77.5 km =48.2 mi,  157°
157°
• Huai'an
		87.8 km =54.6 mi,  238°
238°
• Xinpu
		90.9 km =56.5 mi,  317°
317°
• Hede
		47.1 km =29.3 mi,  122°
122°
• Baoying
		98.4 km =61.1 mi,  209°
209°
• Haizhou
		91.4 km =56.8 mi,  315°
315°
• Gaogou
		59.2 km =36.8 mi,  271°
271°
• Qinnan
		83.4 km =51.8 mi,  174°
174°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016