Night Light of Saratov (Saratovskaya Oblast) from space (Russia) Src. Average luminocity for 10x10km area is 83.5628% and for 50x50km: 13.8915%.
Square area 10x10 km:
 36.76%
 29.55%
 3.21%
 4.41%
 5.61%
 3.07%
 10.03%
 7.35%
 0%
 0%
 0%Square area 50x50 km:
 3.4%
 3.18%
 1%
 1.02%
 1.37%
 1.47%
 1.47%
 2.75%
 3.98%
 6.96%
 73.41%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
51° 58' 32.8" North, 45° 18' 19.8" East
51° 32' 26" North, 46° 0' 31" East
51° 6' 4.1" North, 46° 42' 42.3" East
Some cities around Saratov sort by population:
• Engel’s
		9.2 km =5.7 mi, 
133°
• Marks
		54.5 km =33.9 mi, 
69°
• Privolzhskiy
		14.8 km =9.2 mi, 
169°
• Krasnoarmeysk
		61.4 km =38.2 mi, 
200°
• Stepnoye
		60.9 km =37.8 mi, 
107°
• Svetlyy
		30 km =18.6 mi, 
299°
• Tatishchevo
		32 km =19.9 mi, 
296°
• Sokolovyy
		12.5 km =7.8 mi, 
284°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016
Src.2: picture by Oleg Kononenko, Roscosmos, retrieved 2019-11-29