Night Light of Columbia (Illinois) from space (United States) Src. Average luminocity for 10x10km area is 34.789% and for 50x50km: 45.9734%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
38° 59' 32.1" North, 90° 54' 15.7" West
38° 26' 37.2" North, 90° 12' 4.4" West
37° 53' 27.1" North, 89° 29' 53.2" West
Some cities around Columbia sort by population:
• Oakville
9.5 km =5.9 mi, 288°
• Mehlville
12.8 km =8 mi, 304°
• Arnold
15.4 km =9.6 mi, 265°
• Affton
16.5 km =10.3 mi, 316°
• Lemay
12.1 km =7.5 mi, 325°
• Concord
16.3 km =10.1 mi, 303°
• Cahokia
14.2 km =8.8 mi, 3°
• Waterloo
12.8 km =8 mi, 159°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016