Night Light of Springfield (Illinois) from space (United States) Src. Average luminocity for 10x10km area is 87.4014% and for 50x50km: 12.5483%.
Square area 10x10 km:
 34.18%
 30.1%
 10.2%
 6.8%
 7.65%
 5.95%
 3.06%
 0.68%
 1.36%
 0%
 0%Square area 50x50 km:
 2.12%
 2.04%
 1.47%
 1.57%
 1.82%
 1.82%
 2.2%
 1.82%
 3.2%
 5.41%
 76.52%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
40° 20' 23.2" North, 90° 20' 48.6" West
39° 48' 6.2" North, 89° 38' 37.4" West
39° 15' 33.9" North, 88° 56' 26.1" West
Some cities around Springfield sort by population:
• Decatur
		59 km =36.7 mi, 
85°
• Jacksonville
		50.6 km =31.4 mi, 
261°
• Lincoln
		45.3 km =28.1 mi, 
31°
• Chatham
		14.9 km =9.3 mi, 
200°
• Taylorville
		41 km =25.5 mi, 
133°
• Mount Zion
		65.8 km =40.9 mi, 
92°
• Carlinville
		61.5 km =38.2 mi, 
199°
• Pana
		66.6 km =41.4 mi, 
133°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016