Night Light of Carterville (Illinois) from space (United States) Src. Average luminocity for 10x10km area is 34.165% and for 50x50km: 12.4441%.
Square area 10x10 km:
 1.87%
 3.06%
 4.76%
 2.21%
 7.48%
 7.99%
 8.84%
 7.65%
 12.76%
 32.65%
 10.71%Square area 50x50 km:
 1.02%
 1.16%
 1.74%
 1.2%
 1.52%
 2.02%
 1.59%
 3.34%
 4.03%
 12.22%
 70.16%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
38° 18' 49.8" North, 89° 46' 49.5" West
37° 45' 36.2" North, 89° 4' 38.3" West
37° 12' 7.5" North, 88° 22' 27" West
Some cities around Carterville sort by population:
• Carbondale
		12.8 km =8 mi, 
253°
• Marion
		13.1 km =8.1 mi, 
104°
• Herrin
		6.5 km =4 mi, 
42°
• West Frankfort
		20 km =12.4 mi, 
39°
• Murphysboro
		22.7 km =14.1 mi, 
271°
• Benton
		29.7 km =18.5 mi, 
27°
• Du Quoin
		31.2 km =19.4 mi, 
333°
• Pinckneyville
		44.5 km =27.7 mi, 
323°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016