Night Light of Wahroonga (New South Wales) from space (Australia) Src. Average luminocity for 10x10km area is 60.7051% and for 50x50km: 42.7083%.
Square area 10x10 km:
 6.78%
 9.34%
 3.66%
 11.9%
 29.67%
 12.27%
 3.85%
 4.4%
 13.55%
 4.58%
 0%Square area 50x50 km:
 10.59%
 11.5%
 6.37%
 7.25%
 6.98%
 2.93%
 1.88%
 2.49%
 3.57%
 6.75%
 39.68%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
33° 7' 52.8" South, 150° 24' 45" East
33° 43' 5.4" South, 151° 6' 56.2" East
34° 18' 3.6" South, 151° 49' 7.5" East
Some cities around Wahroonga sort by population:
• Hornsby
		2.3 km =1.4 mi, 
319°
• Saint Ives
		4.3 km =2.7 mi, 
107°
• Turramurra
		2.1 km =1.3 mi, 
144°
• Pymble
		3.8 km =2.4 mi, 
139°
• Thornleigh
		3.7 km =2.3 mi, 
245°
• Mount Colah
		3.9 km =2.4 mi, 
1°
• Waitara
		1.4 km =0.9 mi, 
305°
• Normanhurst
		1.9 km =1.2 mi, 
251°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016