Night Light of Grudziądz (Kujawsko-Pomorskie) from space (Poland) Src. Average luminocity for 10x10km area is 39.2685% and for 50x50km: 4.2964%.
Square area 10x10 km:
 12.43%
 9.79%
 1.85%
 1.98%
 2.91%
 1.32%
 3.84%
 1.98%
 14.42%
 35.45%
 14.02%Square area 50x50 km:
 0.84%
 0.9%
 0.39%
 0.39%
 0.43%
 0.26%
 0.32%
 0.3%
 0.78%
 4.16%
 91.22%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
53° 54' 1.6" North, 18° 3' 1.9" East
53° 29' 2.8" North, 18° 45' 13.2" East
53° 3' 49.1" North, 19° 27' 24.4" East
Some cities around Grudziądz sort by population:
• Kwidzyn
		29.2 km =18.1 mi, 
23°
• Świecie
		21.9 km =13.6 mi, 
247°
• Chełmno
		26.5 km =16.5 mi, 
235°
• Chełmża
		34.7 km =21.6 mi, 
196°
• Wąbrzeźno
		26.1 km =16.2 mi, 
150°
• Prabuty
		42.4 km =26.3 mi, 
44°
• Gniew
		39.4 km =24.5 mi, 
6°
• Nowe
		18.4 km =11.4 mi, 
354°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016