Night Light of Kolno (Podlasie) from space (Poland) Src. Average luminocity for 10x10km area is 4.131% and for 50x50km: 0.9562%.
Square area 10x10 km:
 0.93%
 1.06%
 0.66%
 0%
 0.26%
 0.79%
 0.53%
 0%
 0%
 0.53%
 95.24%Square area 50x50 km:
 0.07%
 0.16%
 0.1%
 0.07%
 0.18%
 0.13%
 0.15%
 0.07%
 0.18%
 0.69%
 98.19%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
53° 49' 42.7" North, 21° 13' 33.3" East
53° 24' 41.3" North, 21° 55' 44.6" East
52° 59' 25.1" North, 22° 37' 55.8" East
Some cities around Kolno sort by population:
• Łomża
		27.4 km =17 mi, 
161°
• Ełk
		54.5 km =33.9 mi, 
31°
• Ostrołęka
		43.1 km =26.8 mi, 
213°
• Zambrów
		51.8 km =32.2 mi, 
156°
• Grajewo
		43.6 km =27.1 mi, 
52°
• Pisz
		25.2 km =15.7 mi, 
342°
• Mońki
		57.6 km =35.8 mi, 
90°
• Orzysz
		44.3 km =27.5 mi, 
1°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016