Night Light of Leiden (South Holland) from space (Netherlands) Src. Average luminocity for 10x10km area is 72.8347% and for 50x50km: 48.3023%.
Square area 10x10 km:
 22.88%
 22.88% 22.62%
 22.62% 4.63%
 4.63% 9.52%
 9.52% 5.82%
 5.82% 7.67%
 7.67% 8.07%
 8.07% 8.6%
 8.6% 10.19%
 10.19% 0%
 0% 0%
 0%Square area 50x50 km:
 18.75%
 18.75% 12.27%
 12.27% 2.94%
 2.94% 3.73%
 3.73% 5.07%
 5.07% 4.11%
 4.11% 4.49%
 4.49% 5.04%
 5.04% 7.18%
 7.18% 6.01%
 6.01% 30.4%
 30.4%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
52° 35' 15.4" North, 3° 47' 23.8" East
52° 9' 30" North, 4° 29' 35" East
51° 43' 29.6" North, 5° 11' 46.3" East
Some cities around Leiden sort by population:
• Wassenaar
		6.3 km =3.9 mi,  257°
257°
• Voorschoten
		4.6 km =2.9 mi,  221°
221°
• Oegstgeest
		2.9 km =1.8 mi,  326°
326°
• Merenwijk
		2.3 km =1.4 mi,  27°
27°
• Rijnsburg
		5 km =3.1 mi,  315°
315°
• Katwijk aan den Rijn
		6.3 km =3.9 mi,  309°
309°
• Noord-Hofland
		3.1 km =1.9 mi,  229°
229°
• Hoge Mors
		2.3 km =1.4 mi,  263°
263°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016