Night Light of Yanchep (Western Australia) from space (Australia) Src. Average luminocity for 10x10km area is 13.0892% and for 50x50km: 6.415%.
Square area 10x10 km:
 0.52%
 0.52% 0.35%
 0.35% 1.22%
 1.22% 1.75%
 1.75% 4.55%
 4.55% 1.75%
 1.75% 1.57%
 1.57% 2.8%
 2.8% 2.1%
 2.1% 9.27%
 9.27% 74.13%
 74.13%Square area 50x50 km:
 1.05%
 1.05% 0.98%
 0.98% 0.4%
 0.4% 0.61%
 0.61% 1.37%
 1.37% 0.98%
 0.98% 0.8%
 0.8% 1.15%
 1.15% 1.9%
 1.9% 4.1%
 4.1% 86.65%
 86.65%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
30° 56' 44.3" South, 114° 55' 42.9" East
31° 32' 48.4" South, 115° 37' 54.2" East
32° 8' 38.6" South, 116° 20' 5.4" East
Some cities around Yanchep sort by population:
• Butler
		12.7 km =7.9 mi,  147°
147°
• Clarkson
		17.5 km =10.9 mi,  149°
149°
• Quinns Rocks
		15.7 km =9.8 mi,  154°
154°
• Mindarie
		17.4 km =10.8 mi,  155°
155°
• Carramar
		20.7 km =12.9 mi,  140°
140°
• Kinross
		21.6 km =13.4 mi,  152°
152°
• Alkimos
		10.6 km =6.6 mi,  150°
150°
• Merriwa
		15.2 km =9.4 mi,  149°
149°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016