Night Light of Sayula (Jalisco) from space (Mexico) Src. Average luminocity for 10x10km area is 11.6667% and for 50x50km: 3.9893%.
Square area 10x10 km:
 0.65%
 1.08%
 4.11%
 2.16%
 0.65%
 0%
 2.6%
 1.73%
 0%
 0%
 87.01%Square area 50x50 km:
 0.25%
 0.42%
 0.66%
 0.59%
 0.71%
 0.57%
 0.71%
 0.48%
 0.56%
 2.53%
 92.55%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
20° 32' 31.5" North, 104° 18' 12.2" West
19° 52' 56.1" North, 103° 36' 1" West
19° 13' 10.8" North, 102° 53' 49.7" West
Some cities around Sayula sort by population:
• Ciudad Guzmán
		24.5 km =15.2 mi, 
143°
• Zapotiltic
		34.2 km =21.3 mi, 
145°
• Usmajac
		6.3 km =3.9 mi, 
97°
• San Sebastián del Sur
		16.5 km =10.3 mi, 
126°
• Tapalpa
		18.1 km =11.2 mi, 
292°
• Atemajac de Brizuela
		31.3 km =19.4 mi, 
335°
• San Andrés Ixtlán
		15.4 km =9.6 mi, 
116°
• Atoyac
		16.7 km =10.4 mi, 
31°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016