Night Light of Saulx-les-Chartreux (Île-de-France) from space (France) Src. Average luminocity for 10x10km area is 87.2932% and for 50x50km: 58.4957%.
Square area 10x10 km:
 31.25%
 31.25% 30.51%
 30.51% 8.04%
 8.04% 11.9%
 11.9% 10.12%
 10.12% 3.72%
 3.72% 4.02%
 4.02% 0.45%
 0.45% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 26.8%
 26.8% 14.28%
 14.28% 3.99%
 3.99% 4.15%
 4.15% 4.57%
 4.57% 3.51%
 3.51% 5%
 5% 4.58%
 4.58% 5.17%
 5.17% 6.1%
 6.1% 21.84%
 21.84%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
49° 9' 9.5" North, 1° 33' 50.9" East
48° 41' 26.2" North, 2° 16' 2.2" East
48° 13' 27.6" North, 2° 58' 13.4" East
Some cities around Saulx-les-Chartreux sort by population:
• Massy
		4.2 km =2.6 mi,  15°
15°
• Palaiseau
		3.3 km =2.1 mi,  337°
337°
• Longjumeau
		3 km =1.9 mi,  80°
80°
• Chilly-Mazarin
		4.5 km =2.8 mi,  53°
53°
• Morangis
		5.5 km =3.4 mi,  74°
74°
• Villebon-sur-Yvette
		2.6 km =1.6 mi,  310°
310°
• Épinay-sur-Orge
		3.7 km =2.3 mi,  120°
120°
• La Ville-du-Bois
		3.9 km =2.4 mi,  178°
178°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016