Night Light of Hybla Valley (Virginia) from space (United States) Src. Average luminocity for 10x10km area is 73.8299% and for 50x50km: 65.8317%.
Square area 10x10 km:
 14.97%
 14.97% 14.12%
 14.12% 13.78%
 13.78% 14.29%
 14.29% 16.67%
 16.67% 12.93%
 12.93% 7.65%
 7.65% 3.57%
 3.57% 2.04%
 2.04% 0%
 0% 0%
 0%Square area 50x50 km:
 20.45%
 20.45% 13.8%
 13.8% 8.77%
 8.77% 11.29%
 11.29% 10.01%
 10.01% 6.25%
 6.25% 4.04%
 4.04% 5.1%
 5.1% 6.26%
 6.26% 6.52%
 6.52% 7.5%
 7.5%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
39° 17' 38" North, 77° 47' 10.2" West
38° 44' 51.4" North, 77° 4' 58.9" West
38° 11' 49.7" North, 76° 22' 47.7" West
Some cities around Hybla Valley sort by population:
• Woodlawn
		5.5 km =3.4 mi,  231°
231°
• Rose Hill
		5.2 km =3.2 mi,  330°
330°
• Fort Hunt
		2.7 km =1.7 mi,  127°
127°
• Groveton
		2.2 km =1.4 mi,  356°
356°
• Mount Vernon
		4 km =2.5 mi,  202°
202°
• Huntington
		5.1 km =3.2 mi,  12°
12°
• Fort Belvoir
		6.7 km =4.2 mi,  233°
233°
• Belle Haven
		4.5 km =2.8 mi,  22°
22°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016