Night Light of Qiancheng (Hunan) from space (China) Src. Average luminocity for 10x10km area is 0.8049% and for 50x50km: 0.6363%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
27° 48' 31.3" North, 109° 3' 44.3" East
27° 11' 6" North, 109° 45' 55.5" East
26° 33' 28.1" North, 110° 28' 6.8" East
Some cities around Qiancheng sort by population:
• Fenghuang
85 km =52.8 mi, 348°
• Huaihua
48.2 km =30 mi, 29°
• Tongren
82.3 km =51.1 mi, 315°
• Hongjiang
24.2 km =15 mi, 110°
• Anjiang
36.6 km =22.7 mi, 65°
• Shijiang
102.4 km =63.6 mi, 96°
• Shuangjiang
114.7 km =71.3 mi, 182°
• Simenqian
115.7 km =71.9 mi, 73°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016