Night Light of Plouguerneau (Brittany) from space (France) Src. Average luminocity for 10x10km area is 1.3497% and for 50x50km: 3.5433%.
Square area 10x10 km:
 0.3%
 0.3%
 0%
 0%
 0.6%
 0%
 0.6%
 0%
 0%
 0%
 98.21%Square area 50x50 km:
 0.8%
 0.93%
 0.15%
 0.28%
 0.4%
 0.35%
 0.29%
 0.4%
 1.04%
 1.86%
 93.5%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
49° 3' 46.3" North, 5° 12' 11.3" West
48° 36' 0" North, 4° 30' 0" West
48° 7' 58.3" North, 3° 47' 48.8" West
Some cities around Plouguerneau sort by population:
• Guipavas
		19.8 km =12.3 mi, 
157°
• Rd pt des Chataigniers, Rte de Milizac, Guilers, Finistère, France
		19.1 km =11.9 mi, 
195°
• Plabennec
		12.1 km =7.5 mi, 
153°
• Guilers
		19.9 km =12.4 mi, 
192°
• Saint-Renan
		20.4 km =12.7 mi, 
204°
• Lesneven
		13.5 km =8.4 mi, 
103°
• Gouesnou
		16.6 km =10.3 mi, 
170°
• Ploudalmézeau
		13.3 km =8.3 mi, 
236°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016