Night Light of Xiulin (Hubei) from space (China) Src. Average luminocity for 10x10km area is 17.1171% and for 50x50km: 1.1131%.
Square area 10x10 km:
 0.99%
 1.79%
 2.98%
 2.98%
 2.18%
 2.18%
 4.76%
 1.79%
 2.18%
 2.78%
 75.4%Square area 50x50 km:
 0.04%
 0.08%
 0.24%
 0.12%
 0.11%
 0.18%
 0.34%
 0.15%
 0.29%
 0.13%
 98.32%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
30° 19' 31.7" North, 111° 41' 48.8" East
29° 43' 0" North, 112° 24' 0" East
29° 6' 15" North, 113° 6' 11.3" East
Some cities around Xiulin sort by population:
• Yueyang
		77.2 km =48 mi, 
119°
• Shashi
		67.3 km =41.8 mi, 
347°
• Qianjiang
		91.5 km =56.9 mi, 
31°
• Jingzhou
		73.3 km =45.5 mi, 
344°
• Buhe
		65.6 km =40.8 mi, 
345°
• Jinshi
		52.7 km =32.7 mi, 
256°
• Anxiang
		42.7 km =26.5 mi, 
214°
• Nanzhou
		39.7 km =24.7 mi, 
179°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016