Night Light of Saint-Martin-des-Champs (Brittany) from space (France) Src. Average luminocity for 10x10km area is 12.4821% and for 50x50km: 1.1505%.
Square area 10x10 km:
 1.19%
 1.19%
 1.93%
 2.23%
 2.38%
 2.68%
 1.49%
 0%
 0.6%
 1.34%
 84.97%Square area 50x50 km:
 0.09%
 0.22%
 0.18%
 0.19%
 0.11%
 0.11%
 0.14%
 0.1%
 0.09%
 0.13%
 98.64%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
49° 2' 46.8" North, 4° 32' 11.2" West
48° 34' 60" North, 3° 49' 60" West
48° 6' 57.8" North, 3° 7' 48.7" West
Some cities around Saint-Martin-des-Champs sort by population:
• Lannion
		32.3 km =20.1 mi, 
59°
• Morlaix
		0.8 km =0.5 mi, 
148°
• Landerneau
		34.1 km =21.2 mi, 
244°
• Landivisiau
		19.2 km =11.9 mi, 
244°
• Carhaix-Plouguer
		39.2 km =24.4 mi, 
150°
• Perros-Guirec
		38.7 km =24 mi, 
48°
• Plabennec
		44.6 km =27.7 mi, 
258°
• Lesneven
		35.9 km =22.3 mi, 
268°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016