Night Light of Ciudad Serdán (Puebla) from space (Mexico) Src. Average luminocity for 10x10km area is 11.4805% and for 50x50km: 7.9302%.
Square area 10x10 km:
 0%
 0.87%
 2.81%
 0.65%
 2.6%
 1.08%
 5.41%
 0.65%
 0.22%
 2.38%
 83.33%Square area 50x50 km:
 0%
 0.19%
 0.8%
 1.36%
 2.3%
 1.24%
 1.92%
 1.53%
 1.2%
 5.21%
 84.26%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
19° 39' 7.5" North, 98° 8' 58.4" West
18° 59' 18.8" North, 97° 26' 47.1" West
18° 19' 20.6" North, 96° 44' 35.9" West
Some cities around Ciudad Serdán sort by population:
• San Salvador El Seco
		26.1 km =16.2 mi, 
308°
• Palmarito Tochapan
		22.4 km =13.9 mi, 
244°
• Quecholac
		22.6 km =14 mi, 
260°
• Xaltepec
		20.8 km =12.9 mi, 
235°
• Cuacnopalan
		20.2 km =12.6 mi, 
199°
• Esperanza
		16.2 km =10.1 mi, 
153°
• Tlachichuca
		14.3 km =8.9 mi, 
11°
• Santa Maria Coatepec
		20.4 km =12.7 mi, 
311°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016