Night Light of Lafayette (California) from space (United States) Src. Average luminocity for 10x10km area is 41.5422% and for 50x50km: 43.0009%.
Square area 10x10 km:
 3.73%
 3.41%
 0%
 3.57%
 8.77%
 11.04%
 16.23%
 17.37%
 18.67%
 15.1%
 2.11%Square area 50x50 km:
 8.64%
 8.2%
 2.43%
 5.07%
 6.47%
 8.52%
 7.35%
 6.15%
 13.98%
 16.09%
 17.09%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
38° 26' 19" North, 122° 49' 16.1" West
37° 53' 8.7" North, 122° 7' 4.9" West
37° 19' 43.5" North, 121° 24' 53.6" West
Some cities around Lafayette sort by population:
• Walnut Creek
		5.2 km =3.2 mi, 
63°
• Pleasant Hill
		8.5 km =5.3 mi, 
35°
• Orinda
		5.5 km =3.4 mi, 
259°
• Moraga
		5.7 km =3.5 mi, 
190°
• Alamo
		8.5 km =5.3 mi, 
117°
• Waldon
		7.1 km =4.4 mi, 
50°
• Contra Costa Centre
		7 km =4.3 mi, 
48°
• Saranap
		3.7 km =2.3 mi, 
91°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016