Night Light of Zubtsov (Tver’ Oblast) from space (Russia) Src. Average luminocity for 10x10km area is 1.7584% and for 50x50km: 1.1912%.
Square area 10x10 km:
 0.24%
 0.72%
 0%
 0%
 0%
 0.48%
 0.24%
 0.48%
 0.24%
 0.96%
 96.65%Square area 50x50 km:
 0.16%
 0.32%
 0.12%
 0.04%
 0.08%
 0.1%
 0.11%
 0.14%
 0.21%
 1.3%
 97.42%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
56° 33' 53.1" North, 33° 53' 10.4" East
56° 10' 31.2" North, 34° 35' 21.7" East
55° 46' 54.9" North, 35° 17' 32.9" East
Some cities around Zubtsov sort by population:
• Rzhev
		18.8 km =11.7 mi, 
300°
• Gagarin
		73.7 km =45.8 mi, 
159°
• Volokolamsk
		87 km =54.1 mi, 
100°
• Shakhovskaya
		59.1 km =36.7 mi, 
105°
• Staritsa
		42.7 km =26.5 mi, 
30°
• Sychëvka
		43.6 km =27.1 mi, 
206°
• Lotoshino
		65.5 km =40.7 mi, 
84°
• Olenino
		68.2 km =42.4 mi, 
273°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016