Night Light of Luleå (Norrbotten) from space (Sweden) Src. Average luminocity for 10x10km area is 62.6993% and for 50x50km: 4.6856%.
Square area 10x10 km:
 22.12%
 20.72%
 5.51%
 2.62%
 1.66%
 2.36%
 1.31%
 12.76%
 20.8%
 8.65%
 1.49%Square area 50x50 km:
 1.17%
 1.22%
 0.37%
 0.25%
 0.25%
 0.22%
 0.12%
 0.61%
 1.87%
 3.58%
 90.32%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
65° 52' 23.4" North, 21° 27' 5.5" East
65° 35' 2.9" North, 22° 9' 16.7" East
65° 17' 30.8" North, 22° 51' 28" East
Some cities around Luleå sort by population:
• Skellefteå
		108.3 km =67.3 mi, 
211°
• Piteå
		43.1 km =26.8 mi, 
226°
• Kemi, FI
		111.7 km =69.4 mi, 
81°
• Tornio, FI
		95.7 km =59.5 mi, 
72°
• Boden
		34.2 km =21.3 mi, 
321°
• Kalix
		54.7 km =34 mi, 
56°
• Haparanda
		94.9 km =59 mi, 
72°
• Ylitornio, FI
		106.1 km =65.9 mi, 
40°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016