Night Light of San Francisco (Heredia) from space (Costa Rica) Src. Average luminocity for 10x10km area is 92.8492% and for 50x50km: 31.2505%.
Square area 10x10 km:
 52.27%
 25.41%
 4.34%
 7.44%
 8.88%
 1.65%
 0%
 0%
 0%
 0%
 0%Square area 50x50 km:
 7.84%
 6.32%
 2.91%
 2.85%
 4.7%
 4.42%
 4.49%
 4.89%
 6.54%
 9.23%
 45.81%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
10° 41' 4.9" North, 84° 49' 56.9" West
9° 59' 34.8" North, 84° 7' 45.6" West
9° 17' 59.3" North, 83° 25' 34.4" West
Some cities around San Francisco sort by population:
• San Juan
		6.4 km =4 mi, 
125°
• Mercedes
		1.6 km =1 mi, 
341°
• Heredia
		1.7 km =1.1 mi, 
53°
• San Pablo
		3.6 km =2.2 mi, 
85°
• San Josecito
		4.2 km =2.6 mi, 
50°
• San Antonio
		6 km =3.7 mi, 
259°
• San Rafael
		3.9 km =2.4 mi, 
54°
• Llorente
		2.8 km =1.7 mi, 
282°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016