Night Light of Tianshui (Gansu) from space (China) Src. Average luminocity for 10x10km area is 30.6101% and for 50x50km: 4.4485%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
35° 9' 23.1" North, 105° 2' 21.3" East
34° 34' 46.3" North, 105° 44' 32.6" East
33° 59' 55" North, 106° 26' 43.8" East
Some cities around Tianshui sort by population:
• Lanzhou
238.3 km =148.1 mi, 313°
• Guangyuan
237.8 km =147.8 mi, 178°
• Linxia Chengguanzhen
257.1 km =159.8 mi, 296°
• Hanzhong
204.8 km =127.3 mi, 144°
• Pingliang
137 km =85.1 mi, 38°
• Guozhen
150.1 km =93.3 mi, 99°
• Beidao
13.9 km =8.6 mi, 95°
• Mawu
77.7 km =48.3 mi, 257°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016