Night Light of Ludington (Michigan) from space (United States) Src. Average luminocity for 10x10km area is 15.7032% and for 50x50km: 0.9639%.
Square area 10x10 km:
 0.95%
 2.54%
 4.6%
 0.79%
 1.43%
 2.22%
 3.33%
 1.27%
 0%
 7.3%
 75.56%Square area 50x50 km:
 0.06%
 0.12%
 0.24%
 0.03%
 0.12%
 0.15%
 0.17%
 0.15%
 0.12%
 0.34%
 98.49%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
44° 27' 33.4" North, 87° 9' 20.6" West
43° 57' 19" North, 86° 27' 9.3" West
43° 26' 49.1" North, 85° 44' 58.1" West
Some cities around Ludington sort by population:
• Muskegon
		81.8 km =50.8 mi, 
168°
• Manitowoc
		97.5 km =60.6 mi, 
278°
• Norton Shores
		88.7 km =55.1 mi, 
170°
• Two Rivers
		91.9 km =57.1 mi, 
283°
• Muskegon Heights
		85.6 km =53.2 mi, 
168°
• Big Rapids
		82.8 km =51.4 mi, 
110°
• Cadillac
		90.2 km =56 mi, 
68°
• Manistee
		33.7 km =20.9 mi, 
17°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016