Night Light of Barstow (California) from space (United States) Src. Average luminocity for 10x10km area is 38.4652% and for 50x50km: 2.71%.
Square area 10x10 km:
 5.31%
 4.58%
 1.47%
 5.31%
 9.71%
 7.69%
 10.07%
 3.66%
 7.14%
 33.88%
 11.17%Square area 50x50 km:
 0.24%
 0.23%
 0.08%
 0.28%
 0.54%
 0.6%
 0.74%
 0.35%
 0.51%
 2.38%
 94.05%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
35° 28' 23.7" North, 117° 43' 33.4" West
34° 53' 54.9" North, 117° 1' 22.2" West
34° 19' 11.6" North, 116° 19' 10.9" West
Some cities around Barstow sort by population:
• Victorville
		47.2 km =29.3 mi, 
211°
• Hesperia
		58.3 km =36.2 mi, 
205°
• Apple Valley
		46.7 km =29 mi, 
198°
• Adelanto
		49.8 km =30.9 mi, 
225°
• Fort Irwin
		50.9 km =31.6 mi, 
37°
• Spring Valley Lake
		50.3 km =31.3 mi, 
206°
• Lucerne Valley
		50.8 km =31.6 mi, 
174°
• Silver Lakes
		33.7 km =20.9 mi, 
239°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016