Night Light of Kalix (Norrbotten) from space (Sweden) Src. Average luminocity for 10x10km area is 10.3733% and for 50x50km: 0.6972%.
Square area 10x10 km:
 0.79%
 0.87%
 2.36%
 2.88%
 1.4%
 1.14%
 0.35%
 0%
 0%
 5.51%
 84.7%Square area 50x50 km:
 0.05%
 0.07%
 0.12%
 0.14%
 0.07%
 0.09%
 0.08%
 0.1%
 0.13%
 0.22%
 98.94%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
66° 8' 20.4" North, 22° 27' 12" East
65° 51' 10.7" North, 23° 9' 23.2" East
65° 33' 49.4" North, 23° 51' 34.5" East
Some cities around Kalix sort by population:
• LuleĆ„
		54.7 km =34 mi, 
236°
• PiteĆ„
		97.4 km =60.5 mi, 
232°
• Kemi, FI
		65.4 km =40.6 mi, 
101°
• Tornio, FI
		45 km =28 mi, 
90°
• Boden
		66.9 km =41.6 mi, 
267°
• Keminmaa, FI
		63.5 km =39.5 mi, 
95°
• Haparanda
		44.6 km =27.7 mi, 
92°
• Ylitornio, FI
		55.9 km =34.7 mi, 
24°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016