Night Light of Oulu (Northern Ostrobothnia) from space (Finland) Src. Average luminocity for 10x10km area is 78.446% and for 50x50km: 11.6012%.
Square area 10x10 km:
 43.32%
 22.89%
 3.75%
 3.75%
 0.73%
 1.01%
 1.83%
 4.67%
 8.24%
 8.61%
 1.19%Square area 50x50 km:
 3.11%
 2.76%
 0.92%
 1.19%
 1.08%
 0.79%
 0.58%
 1.13%
 2.76%
 6.92%
 78.77%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
65° 18' 27.8" North, 24° 45' 54.1" East
65° 0' 44.5" North, 25° 28' 5.4" East
64° 42' 49.3" North, 26° 10' 16.6" East
Some cities around Oulu sort by population:
• Haukipudas
		19 km =11.8 mi, 
343°
• Kempele
		11.2 km =7 mi, 
171°
• Kiiminki
		20.3 km =12.6 mi, 
49°
• Oulunsalo
		9.1 km =5.7 mi, 
197°
• Muhos
		33.6 km =20.9 mi, 
132°
• Liminka
		22.7 km =14.1 mi, 
186°
• Ii
		34.2 km =21.3 mi, 
352°
• Tyrnävä
		28.9 km =18 mi, 
162°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016