Night Light of Preston (Victoria) from space (Australia) Src. Average luminocity for 10x10km area is 90.6003% and for 50x50km: 53.391%.
Square area 10x10 km:
 28.4%
 31.46%
 23.3%
 12.07%
 4.76%
 0%
 0%
 0%
 0%
 0%
 0%Square area 50x50 km:
 14.71%
 13.22%
 6.88%
 9.18%
 7.68%
 4.98%
 3.53%
 3.09%
 5.33%
 7.69%
 23.71%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
37° 11' 31.1" South, 144° 18' 48.8" East
37° 45' 0" South, 145° 1' 0" East
38° 18' 13.9" South, 145° 43' 11.3" East
Some cities around Preston sort by population:
• Reservoir
		4 km =2.5 mi, 
338°
• Northcote
		2.4 km =1.5 mi, 
218°
• Thornbury
		1.3 km =0.8 mi, 
226°
• Ivanhoe
		3.1 km =1.9 mi, 
132°
• Heidelberg
		4.4 km =2.7 mi, 
90°
• Fairfield
		3.3 km =2.1 mi, 
178°
• Heidelberg Heights
		3.6 km =2.2 mi, 
77°
• Heidelberg West
		2.4 km =1.5 mi, 
60°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016