Night Light of San Mariano (Cagayan Valley) from space (Philippines) Src. Average luminocity for 10x10km area is 0.8853% and for 50x50km: 0.5491%.
Square area 10x10 km:
 0%
 0%
 0%
 0%
 0.43%
 0.43%
 0%
 0%
 0.87%
 0.87%
 97.4%Square area 50x50 km:
 0%
 0%
 0.09%
 0.17%
 0.05%
 0.16%
 0.08%
 0.07%
 0.07%
 0.16%
 99.15%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
17° 39' 14" North, 121° 18' 39.3" East
16° 58' 57.5" North, 122° 0' 50.5" East
16° 18' 32.4" North, 122° 43' 1.8" East
Some cities around San Mariano sort by population:
• Ilagan
		22.7 km =14.1 mi, 
324°
• Alicia
		40.6 km =25.2 mi, 
236°
• Naguilian
		19.4 km =12.1 mi, 
283°
• Minante Segundo
		28.3 km =17.6 mi, 
251°
• Burgos
		35.2 km =21.9 mi, 
289°
• Reina Mercedes
		19.9 km =12.4 mi, 
270°
• Upi
		22.1 km =13.7 mi, 
300°
• Gamu
		20.3 km =12.6 mi, 
291°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016