Night Light of Yatou (Shandong) from space (China) Src. Average luminocity for 10x10km area is 41.2398% and for 50x50km: 5.8307%.
Square area 10x10 km:
 1.53%
 2.21%
 9.18%
 11.9%
 8.5%
 9.18%
 3.57%
 7.48%
 6.63%
 32.99%
 6.8%Square area 50x50 km:
 0.22%
 0.29%
 0.68%
 1.02%
 0.98%
 1.29%
 0.81%
 1.77%
 1.35%
 4.34%
 87.26%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
37° 42' 53.6" North, 121° 44' 4.2" East
37° 9' 23.8" North, 122° 26' 15.4" East
36° 35' 38.9" North, 123° 8' 26.7" East
Some cities around Yatou sort by population:
• Yantai
		95.1 km =59.1 mi, 
291°
• Laiyang
		154.3 km =95.9 mi, 
262°
• Weihai
		48.6 km =30.2 mi, 
323°
• Tianfu
		36.1 km =22.4 mi, 
289°
• Dongcun
		121.1 km =75.2 mi, 
249°
• Zhuangyuan
		143.5 km =89.2 mi, 
276°
• Qingyang
		110.9 km =68.9 mi, 
289°
• Ninghai
		77.6 km =48.2 mi, 
289°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016