Night Light of Colby (Kansas) from space (United States) Src. Average luminocity for 10x10km area is 18.0714% and for 50x50km: 0.8237%.
Square area 10x10 km:
 0.85%
 1.87%
 6.12%
 2.89%
 3.4%
 1.19%
 0.68%
 2.04%
 0.68%
 7.99%
 72.28%Square area 50x50 km:
 0.03%
 0.07%
 0.24%
 0.11%
 0.13%
 0.07%
 0.06%
 0.13%
 0.1%
 0.31%
 98.74%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
39° 56' 13.5" North, 101° 45' 19.8" West
39° 23' 45" North, 101° 3' 8.6" West
38° 51' 1.3" North, 100° 20' 57.3" West
Some cities around Colby sort by population:
• Garden City
		159.1 km =98.9 mi, 
174°
• North Platte
		193.7 km =120.4 mi, 
7°
• Hays
		159.5 km =99.1 mi, 
111°
• Lexington
		190.1 km =118.1 mi, 
35°
• McCook
		96.8 km =60.1 mi, 
22°
• Lamar
		199.2 km =123.8 mi, 
223°
• Ulysses
		203.5 km =126.4 mi, 
187°
• Holdrege
		184.6 km =114.7 mi, 
51°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016