Night Light of Gravatá (Pernambuco) from space (Brazil) Src. Average luminocity for 10x10km area is 51.9607% and for 50x50km: 8.4486%.
Square area 10x10 km:
 4.96%
 14.05%
 9.09%
 5.17%
 7.23%
 9.5%
 6.2%
 7.23%
 17.36%
 19.21%
 0%Square area 50x50 km:
 0.31%
 0.86%
 1.18%
 0.91%
 1.48%
 1.38%
 1.52%
 1.68%
 2.5%
 6%
 82.18%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
7° 30' 16.5" South, 36° 16' 4.3" West
8° 12' 4" South, 35° 33' 53" West
8° 53' 47.1" South, 34° 51' 41.8" West
Some cities around Gravatá sort by population:
• Bezerros
		25.8 km =16 mi, 
262°
• Chã Grande
		12.1 km =7.5 mi, 
110°
• Amaraji
		23.7 km =14.7 mi, 
148°
• Pombos
		19.7 km =12.2 mi, 
70°
• Passira
		23 km =14.3 mi, 
355°
• Camocim de São Félix
		27.9 km =17.3 mi, 
231°
• Guabiraba
		26.5 km =16.5 mi, 
205°
• Cumaru
		26.1 km =16.2 mi, 
326°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016