Night Light of Ottumwa (Iowa) from space (United States) Src. Average luminocity for 10x10km area is 39.7789% and for 50x50km: 2.7012%.
Square area 10x10 km:
 4.76%
 7.99%
 4.08%
 5.1%
 6.97%
 8.16%
 6.46%
 4.08%
 5.27%
 36.56%
 10.54%Square area 50x50 km:
 0.24%
 0.38%
 0.32%
 0.34%
 0.34%
 0.44%
 0.5%
 0.27%
 0.54%
 2.15%
 94.49%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 32' 54.1" North, 93° 6' 51.9" West
41° 1' 12" North, 92° 24' 40.7" West
40° 29' 14.6" North, 91° 42' 29.4" West
Some cities around Ottumwa sort by population:
• Oskaloosa
		36.4 km =22.6 mi, 
327°
• Pella
		60.4 km =37.5 mi, 
315°
• Fairfield
		37.7 km =23.4 mi, 
91°
• Grinnell
		84.5 km =52.5 mi, 
342°
• Mount Pleasant
		71.9 km =44.7 mi, 
95°
• Washington
		67.7 km =42.1 mi, 
62°
• Knoxville
		67.3 km =41.8 mi, 
299°
• Centerville
		50.2 km =31.2 mi, 
230°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016