Night Light of Ełk (Warmia-Masuria) from space (Poland) Src. Average luminocity for 10x10km area is 23.7315% and for 50x50km: 2.0064%.
Square area 10x10 km:
 6.35%
 5.56%
 2.38%
 2.12%
 0.93%
 1.19%
 1.06%
 1.06%
 1.85%
 27.12%
 50.4%Square area 50x50 km:
 0.37%
 0.4%
 0.25%
 0.18%
 0.16%
 0.14%
 0.24%
 0.11%
 0.17%
 1.59%
 96.39%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
54° 14' 28.2" North, 21° 39' 41.7" East
53° 49' 41.7" North, 22° 21' 52.9" East
53° 24' 40.3" North, 23° 4' 4.2" East
Some cities around Ełk sort by population:
• Suwałki
		48.6 km =30.2 mi, 
49°
• Giżycko
		45.7 km =28.4 mi, 
300°
• Augustów
		40.4 km =25.1 mi, 
87°
• Grajewo
		21 km =13 mi, 
163°
• Pisz
		42.6 km =26.5 mi, 
238°
• Olecko
		24.7 km =15.3 mi, 
22°
• Gołdap
		53.3 km =33.1 mi, 
355°
• Orzysz
		27.4 km =17 mi, 
265°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016