Night Light of Sefton (New South Wales) from space (Australia) Src. Average luminocity for 10x10km area is 93.1783% and for 50x50km: 59.9421%.
Square area 10x10 km:
 31.47%
 38.46%
 20.1%
 9.97%
 0%
 0%
 0%
 0%
 0%
 0%
 0%Square area 50x50 km:
 13.9%
 15.01%
 7.78%
 9.62%
 11.11%
 5.99%
 4.25%
 5.81%
 7.6%
 8.81%
 10.13%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
33° 18' 7.4" South, 150° 18' 26.7" East
33° 53' 15.8" South, 151° 0' 37.9" East
34° 28' 9.9" South, 151° 42' 49.2" East
Some cities around Sefton sort by population:
• Lidcombe
		3.7 km =2.3 mi, 
46°
• Yagoona
		2.1 km =1.3 mi, 
155°
• Chester Hill
		1.4 km =0.9 mi, 
313°
• Bass Hill
		1.8 km =1.1 mi, 
229°
• Georges Hall
		3.1 km =1.9 mi, 
220°
• Berala
		2.8 km =1.7 mi, 
50°
• Villawood
		2.8 km =1.7 mi, 
277°
• South Granville
		3.2 km =2 mi, 
0°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016