Night Light of Ontario (Ohio) from space (United States) Src. Average luminocity for 10x10km area is 50.8539% and for 50x50km: 9.881%.
Square area 10x10 km:
 9.42%
 9.42%
 8.28%
 6.66%
 5.19%
 7.31%
 10.55%
 7.63%
 12.34%
 18.67%
 4.55%Square area 50x50 km:
 1.27%
 1.45%
 0.95%
 1.38%
 1.23%
 1.21%
 1.66%
 1.53%
 2.73%
 6.31%
 80.29%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 17' 23.8" North, 83° 17' 35.9" West
40° 45' 34.2" North, 82° 35' 24.6" West
40° 13' 29.2" North, 81° 53' 13.4" West
Some cities around Ontario sort by population:
• Mansfield
		6.3 km =3.9 mi, 
91°
• Ashland
		25.9 km =16.1 mi, 
62°
• Mount Vernon
		41.7 km =25.9 mi, 
167°
• Bucyrus
		32.9 km =20.4 mi, 
279°
• Galion
		17.1 km =10.6 mi, 
260°
• Shelby
		14.8 km =9.2 mi, 
336°
• Willard
		34.6 km =21.5 mi, 
340°
• Apple Valley
		40.8 km =25.4 mi, 
150°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016