Night Light of Chatham (Illinois) from space (United States) Src. Average luminocity for 10x10km area is 98.9805% and for 50x50km: 69.2318%.
Square area 10x10 km:
 85.71%
 85.71% 11.2%
 11.2% 0.81%
 0.81% 0.97%
 0.97% 0.97%
 0.97% 0.32%
 0.32% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 39.02%
 39.02% 15.69%
 15.69% 5.76%
 5.76% 5.24%
 5.24% 4.12%
 4.12% 1.96%
 1.96% 1.92%
 1.92% 1.69%
 1.69% 1.79%
 1.79% 2.41%
 2.41% 20.4%
 20.4%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
42° 15' 49.1" North, 88° 18' 56.4" West
41° 44' 28.1" North, 87° 36' 45.2" West
41° 12' 51.7" North, 86° 54' 33.9" West
Some cities around Chatham sort by population:
• South Shore
		3.7 km =2.3 mi,  51°
51°
• Auburn Gresham
		3.4 km =2.1 mi,  271°
271°
• Greater Grand Crossing
		2.2 km =1.4 mi,  355°
355°
• West Englewood
		6.1 km =3.8 mi,  312°
312°
• South Chicago
		4.8 km =3 mi,  91°
91°
• Hyde Park
		6.1 km =3.8 mi,  14°
14°
• Englewood
		5.1 km =3.2 mi,  327°
327°
• Woodlawn
		4.4 km =2.7 mi,  14°
14°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016