Night Light of Altona (Victoria) from space (Australia) Src. Average luminocity for 10x10km area is 61.5795% and for 50x50km: 42.9887%.
Square area 10x10 km:
 23.05%
 15.26%
 3.57%
 6.17%
 5.84%
 4.87%
 2.44%
 7.63%
 15.26%
 12.5%
 3.41%Square area 50x50 km:
 12.99%
 11.19%
 5.86%
 6.6%
 4.56%
 3.03%
 2.08%
 2.49%
 4.7%
 8.25%
 38.26%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
37° 18' 45" South, 144° 7' 38.1" East
37° 52' 10.7" South, 144° 49' 49.3" East
38° 25' 21.4" South, 145° 32' 0.6" East
Some cities around Altona sort by population:
• Point Cook
		8.6 km =5.3 mi, 
234°
• Yarraville
		8.5 km =5.3 mi, 
46°
• Williamstown
		6.1 km =3.8 mi, 
83°
• Newport
		5.6 km =3.5 mi, 
59°
• Williams Landing
		7.7 km =4.8 mi, 
276°
• Seabrook
		6.4 km =4 mi, 
258°
• Seddon
		8.8 km =5.5 mi, 
36°
• Laverton
		5.4 km =3.4 mi, 
279°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016