Night Light of Saint-Quentin-en-Yvelines (Île-de-France) from space (France) Src. Average luminocity for 10x10km area is 71.4517% and for 50x50km: 49.1499%.
Square area 10x10 km:
 22.44%
 22.44% 25.85%
 25.85% 5.68%
 5.68% 2.41%
 2.41% 5.54%
 5.54% 6.53%
 6.53% 7.24%
 7.24% 11.79%
 11.79% 12.07%
 12.07% 0.43%
 0.43% 0%
 0%Square area 50x50 km:
 18.88%
 18.88% 11.93%
 11.93% 4.01%
 4.01% 3.8%
 3.8% 4.67%
 4.67% 3.98%
 3.98% 5.12%
 5.12% 4.19%
 4.19% 5.72%
 5.72% 9.4%
 9.4% 28.29%
 28.29%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
49° 13' 59.2" North, 1° 18' 56.8" East
48° 46' 18.7" North, 2° 1' 8.1" East
48° 18' 22.8" North, 2° 43' 19.3" East
Some cities around Saint-Quentin-en-Yvelines sort by population:
• Montigny-le-Bretonneux
		1.3 km =0.8 mi,  118°
118°
• Guyancourt
		4 km =2.5 mi,  87°
87°
• Élancourt
		4.9 km =3 mi,  286°
286°
• Trappes
		0.3 km =0.2 mi,  342°
342°
• Voisins-le-Bretonneux
		2.8 km =1.7 mi,  123°
123°
• Bois-d’Arcy
		3.1 km =1.9 mi,  5°
5°
• Fontenay-le-Fleury
		5 km =3.1 mi,  25°
25°
• Magny-les-Hameaux
		4.4 km =2.7 mi,  135°
135°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016