Night Light of Boulogne-Billancourt (Île-de-France) from space (France) Src. Average luminocity for 10x10km area is 95.9233% and for 50x50km: 75.0643%.
Square area 10x10 km:
 59.66%
 59.66% 25.14%
 25.14% 5.54%
 5.54% 5.97%
 5.97% 3.69%
 3.69% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 35.89%
 35.89% 18.93%
 18.93% 5.5%
 5.5% 5.21%
 5.21% 5.54%
 5.54% 4.83%
 4.83% 5.83%
 5.83% 4.42%
 4.42% 4.93%
 4.93% 3.6%
 3.6% 5.31%
 5.31%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
49° 17' 46.1" North, 1° 32' 17.3" East
48° 50' 7.6" North, 2° 14' 28.6" East
48° 22' 13.8" North, 2° 56' 39.8" East
Some cities around Boulogne-Billancourt sort by population:
• Issy-les-Moulineaux
		3.1 km =1.9 mi,  121°
121°
• Clamart
		4.1 km =2.5 mi,  152°
152°
• Suresnes
		4.1 km =2.5 mi,  347°
347°
• Meudon
		2.4 km =1.5 mi,  190°
190°
• Saint-Cloud
		3 km =1.9 mi,  292°
292°
• Vanves
		3.8 km =2.4 mi,  110°
110°
• Sèvres
		2.2 km =1.4 mi,  231°
231°
• Ville-d’Avray
		3.8 km =2.4 mi,  249°
249°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016