Night Light of Savonlinna (South Savo) from space (Finland) Src. Average luminocity for 10x10km area is 36.3561% and for 50x50km: 2.9166%.
Square area 10x10 km:
 5.59%
 6.52%
 5.18%
 8.59%
 4.66%
 2.07%
 0.72%
 0%
 8.59%
 44.82%
 13.25%Square area 50x50 km:
 0.25%
 0.3%
 0.3%
 0.38%
 0.33%
 0.35%
 0.71%
 0.92%
 0.37%
 2.41%
 93.68%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
62° 11' 58.6" North, 28° 10' 36.7" East
61° 52' 11.6" North, 28° 52' 48" East
61° 32' 11.8" North, 29° 34' 59.2" East
Some cities around Savonlinna sort by population:
• Imatra
		77.9 km =48.4 mi, 
184°
• Varkaus
		72.1 km =44.8 mi, 
313°
• Liperi
		78 km =48.5 mi, 
18°
• Kitee
		71.1 km =44.2 mi, 
68°
• Juva
		54.1 km =33.6 mi, 
273°
• Kerimäki
		21.6 km =13.4 mi, 
77°
• Ruokolahti
		65.3 km =40.6 mi, 
182°
• Joroinen
		64.5 km =40.1 mi, 
302°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016