Night Light of Gdynia (Pomerania) from space (Poland) Src. Average luminocity for 10x10km area is 60.6998% and for 50x50km: 18.2399%.
Square area 10x10 km:
 20.93%
 20.22%
 2.03%
 4.43%
 3.11%
 4.31%
 6.46%
 10.05%
 9.45%
 11.24%
 7.78%Square area 50x50 km:
 5.23%
 4.29%
 1.01%
 1.28%
 1.39%
 1.51%
 1.92%
 3.49%
 4.87%
 9.05%
 65.95%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
54° 55' 29.9" North, 17° 49' 43.5" East
54° 31' 8" North, 18° 31' 54.8" East
54° 6' 31.4" North, 19° 14' 6" East
Some cities around Gdynia sort by population:
• Gdańsk
		20 km =12.4 mi, 
158°
• Wejherowo
		21.4 km =13.3 mi, 
296°
• Rumia
		10.9 km =6.8 mi, 
301°
• Sopot
		8.8 km =5.5 mi, 
168°
• Reda
		15.3 km =9.5 mi, 
308°
• Puck
		23.5 km =14.6 mi, 
340°
• Wielki Kack
		6.4 km =4 mi, 
206°
• Żukowo
		22.4 km =13.9 mi, 
208°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016