Night Light of Tczew (Pomerania) from space (Poland) Src. Average luminocity for 10x10km area is 27.1806% and for 50x50km: 7.0548%.
Square area 10x10 km:
 7.32%
 7.07%
 1.52%
 2.53%
 1.64%
 0.25%
 0.63%
 1.39%
 3.66%
 36.24%
 37.75%Square area 50x50 km:
 1.25%
 1.27%
 0.39%
 0.64%
 0.89%
 0.8%
 0.87%
 1.1%
 1.45%
 5.42%
 85.92%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
54° 30' 9.9" North, 18° 4' 29.1" East
54° 5' 32.7" North, 18° 46' 40.3" East
53° 40' 40.8" North, 19° 28' 51.6" East
Some cities around Tczew sort by population:
• Starogard Gdański
		21.8 km =13.5 mi, 
228°
• Malbork
		17.4 km =10.8 mi, 
111°
• Pruszcz Gdański
		21 km =13 mi, 
333°
• Nowy Dwór Gdański
		25.9 km =16.1 mi, 
58°
• Sztum
		25.2 km =15.7 mi, 
139°
• Pelplin
		19 km =11.8 mi, 
196°
• Skarszewy
		21.9 km =13.6 mi, 
263°
• Gniew
		28.7 km =17.8 mi, 
174°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016