Night Light of Johnstone (Scotland) from space (United Kingdom) Src. Average luminocity for 10x10km area is 33.738% and for 50x50km: 22.5733%.
Square area 10x10 km:
 6.34%
 6.1%
 3.23%
 3.59%
 4.43%
 4.19%
 3.71%
 7.06%
 12.56%
 19.74%
 29.07%Square area 50x50 km:
 6.14%
 5.3%
 1.83%
 2.16%
 2.3%
 2.06%
 2.19%
 2.39%
 3.94%
 11.59%
 60.1%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
56° 13' 19.1" North, 5° 13' 9" West
55° 49' 44.6" North, 4° 30' 57.8" West
55° 25' 55.7" North, 3° 48' 46.5" West
Some cities around Johnstone sort by population:
• Paisley
		5.2 km =3.2 mi, 
86°
• Renfrew
		9.1 km =5.7 mi, 
58°
• Barrhead
		8.4 km =5.2 mi, 
113°
• Erskine
		8.9 km =5.5 mi, 
27°
• Linwood
		2.6 km =1.6 mi, 
33°
• Houston
		4.9 km =3 mi, 
332°
• Elderslie
		1.9 km =1.2 mi, 
76°
• Neilston
		7.4 km =4.6 mi, 
130°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016