Night Light of Nagareyama (Chiba) from space (Japan) Src. Average luminocity for 10x10km area is 91.3409% and for 50x50km: 76.079%.
Square area 10x10 km:
 31.12%
 31.12% 36.89%
 36.89% 14.51%
 14.51% 9.79%
 9.79% 7.17%
 7.17% 0.52%
 0.52% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 32.97%
 32.97% 16.98%
 16.98% 6.81%
 6.81% 6.93%
 6.93% 8.46%
 8.46% 6.32%
 6.32% 5.48%
 5.48% 6.5%
 6.5% 7.15%
 7.15% 2.39%
 2.39% 0%
 0%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
36° 25' 26.8" North, 139° 11' 58.3" East
35° 51' 22.7" North, 139° 54' 9.6" East
35° 17' 3.8" North, 140° 36' 20.8" East
Some cities around Nagareyama sort by population:
• Matsudo
		8.5 km =5.3 mi,  180°
180°
• Kashiwa
		6.8 km =4.2 mi,  84°
84°
• Koshigaya
		10.9 km =6.8 mi,  290°
290°
• Sōka
		9.6 km =6 mi,  256°
256°
• Abiko
		10.3 km =6.4 mi,  83°
83°
• Noda
		10.8 km =6.7 mi,  343°
343°
• Yashio
		6.9 km =4.3 mi,  236°
236°
• Yoshikawa
		6.8 km =4.2 mi,  306°
306°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016