Night Light of Velikiye Luki (Pskov Oblast) from space (Russia) Src. Average luminocity for 10x10km area is 29.0238% and for 50x50km: 1.2678%.
Square area 10x10 km:
 5.12%
 8.21%
 2.86%
 3.93%
 2.26%
 1.19%
 0.83%
 1.67%
 4.05%
 37.02%
 32.86%Square area 50x50 km:
 0.21%
 0.33%
 0.11%
 0.16%
 0.09%
 0.06%
 0.03%
 0.07%
 0.16%
 1.55%
 97.23%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
56° 43' 39.8" North, 29° 50' 31.4" East
56° 20' 24" North, 30° 32' 42.6" East
55° 56' 53.8" North, 31° 14' 53.9" East
Some cities around Velikiye Luki sort by population:
• Nevel’
		52.1 km =32.4 mi, 
227°
• Toropets
		69.3 km =43.1 mi, 
75°
• Haradok, BY
		103.6 km =64.4 mi, 
199°
• Zapadnaya Dvina
		94.8 km =58.9 mi, 
95°
• Novosokol’niki
		23.9 km =14.9 mi, 
271°
• Velizh
		91.2 km =56.7 mi, 
153°
• Idritsa
		101.5 km =63.1 mi, 
269°
• Pustoshka
		72.5 km =45 mi, 
269°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016