Night Light of Kościerzyna (Pomerania) from space (Poland) Src. Average luminocity for 10x10km area is 8.4381% and for 50x50km: 1.2541%.
Square area 10x10 km:
 0.88%
 2.4%
 0.63%
 1.14%
 1.52%
 0.38%
 0.88%
 0.51%
 0%
 0%
 91.67%Square area 50x50 km:
 0.08%
 0.19%
 0.14%
 0.15%
 0.27%
 0.22%
 0.31%
 0.2%
 0.07%
 0.05%
 98.33%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
54° 31' 56.2" North, 17° 16' 41.1" East
54° 7' 20.1" North, 17° 58' 52.3" East
53° 42' 29.3" North, 18° 41' 3.6" East
Some cities around Kościerzyna sort by population:
• Starogard Gdański
		39.7 km =24.7 mi, 
116°
• Pruszcz Gdański
		45.4 km =28.2 mi, 
69°
• Bytów
		32.3 km =20.1 mi, 
279°
• Kartuzy
		27.4 km =17 mi, 
30°
• Czersk
		36.3 km =22.6 mi, 
180°
• Sierakowice
		25.5 km =15.8 mi, 
346°
• Skarszewy
		30.8 km =19.1 mi, 
101°
• Żukowo
		34.9 km =21.7 mi, 
45°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016