Night Light of Blackburn (Victoria) from space (Australia) Src. Average luminocity for 10x10km area is 77.5799% and for 50x50km: 48.4039%.
Square area 10x10 km:
 11.73%
 19.22%
 14.12%
 20.58%
 21.43%
 8.67%
 3.4%
 0.51%
 0.34%
 0%
 0%Square area 50x50 km:
 12.24%
 11.4%
 5.98%
 8.9%
 7.64%
 5.57%
 3.69%
 3.34%
 5.06%
 7.08%
 29.09%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
37° 15' 41.4" South, 144° 27' 0.5" East
37° 49' 8.4" South, 145° 9' 11.7" East
38° 22' 20.5" South, 145° 51' 23" East
Some cities around Blackburn sort by population:
• Doncaster East
		3.5 km =2.2 mi, 
353°
• Donvale
		3.8 km =2.4 mi, 
29°
• Box Hill
		2.4 km =1.5 mi, 
270°
• Box Hill North
		3 km =1.9 mi, 
307°
• Nunawading
		1.7 km =1.1 mi, 
95°
• Forest Hill
		3.1 km =1.9 mi, 
121°
• Burwood East
		3.5 km =2.2 mi, 
184°
• Box Hill South
		3.2 km =2 mi, 
242°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016