Night Light of Svirsk (Irkutsk Oblast) from space (Russia) Src. Average luminocity for 10x10km area is 8.2063% and for 50x50km: 2.0017%.
Square area 10x10 km:
 0.53%
 1.59%
 1.06%
 0.53%
 3.04%
 0.13%
 1.06%
 0.93%
 0.93%
 0.26%
 89.95%Square area 50x50 km:
 0.13%
 0.26%
 0.25%
 0.14%
 0.48%
 0.3%
 0.35%
 0.18%
 0.28%
 1.72%
 95.92%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
53° 30' 21.9" North, 102° 37' 45.8" East
53° 5' 9" North, 103° 19' 57" East
52° 39' 41.2" North, 104° 2' 8.3" East
Some cities around Svirsk sort by population:
• Angarsk
		71.5 km =44.4 mi, 
148°
• Usol’ye-Sibirskoye
		42.6 km =26.5 mi, 
150°
• Cheremkhovo
		19.3 km =12 mi, 
293°
• Mishelevka
		27.6 km =17.1 mi, 
202°
• Sredniy
		24.4 km =15.2 mi, 
154°
• Kutulik
		46.9 km =29.1 mi, 
308°
• Bokhan
		30.2 km =18.8 mi, 
75°
• Tayturka
		25.6 km =15.9 mi, 
160°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016