Night Light of Mattoon (Illinois) from space (United States) Src. Average luminocity for 10x10km area is 32.5341% and for 50x50km: 4.3999%.
Square area 10x10 km:
 4.87%
 5.52%
 5.03%
 2.92%
 3.57%
 6.49%
 2.11%
 1.46%
 5.19%
 45.29%
 17.53%Square area 50x50 km:
 0.38%
 0.57%
 0.69%
 0.49%
 0.44%
 0.79%
 0.73%
 0.46%
 0.65%
 3.52%
 91.28%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
40° 1' 25.1" North, 89° 4' 33.5" West
39° 28' 59.1" North, 88° 22' 22.2" West
38° 56' 17.8" North, 87° 40' 11" West
Some cities around Mattoon sort by population:
• Decatur
		63.7 km =39.6 mi, 
308°
• Charleston
		16.9 km =10.5 mi, 
85°
• Effingham
		43 km =26.7 mi, 
199°
• Paris
		59.7 km =37.1 mi, 
76°
• Savoy
		64.4 km =40 mi, 
9°
• Mount Zion
		53.6 km =33.3 mi, 
306°
• Pana
		61.6 km =38.3 mi, 
260°
• Monticello
		62.9 km =39.1 mi, 
344°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016