Night Light of Guanajuato from space (Mexico) Src. Average luminocity for 10x10km area is 44.3214% and for 50x50km: 15.0091%.
Square area 10x10 km:
 5.95%
 11.31%
 5.56%
 6.15%
 4.17%
 3.77%
 7.74%
 7.14%
 14.29%
 28.97%
 4.96%Square area 50x50 km:
 1.03%
 1.7%
 2.35%
 2.47%
 1.95%
 1.97%
 4.07%
 2.97%
 6.33%
 8.82%
 66.32%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
21° 40' 24.5" North, 101° 57' 44" West
21° 1' 6.9" North, 101° 15' 32.8" West
20° 21' 38.9" North, 100° 33' 21.5" West
Some cities around Guanajuato sort by population:
• Silao
		19.3 km =12 mi, 
244°
• Marfil
		4 km =2.5 mi, 
221°
• Romita
		31.4 km =19.5 mi, 
238°
• Yerbabuena
		6.4 km =4 mi, 
194°
• Arandas
		34.8 km =21.6 mi, 
199°
• Santa Teresa
		8.8 km =5.5 mi, 
222°
• Duarte
		28.6 km =17.8 mi, 
285°
• La Aldea
		26.2 km =16.3 mi, 
240°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016