Night Light of Ansan-si (Gyeonggi-do) from space (South Korea) Src. Average luminocity for 10x10km area is 92.2695% and for 50x50km: 75.4888%.
Square area 10x10 km:
 48.05%
 48.05% 22.4%
 22.4% 13.15%
 13.15% 11.69%
 11.69% 2.76%
 2.76% 0.49%
 0.49% 1.3%
 1.3% 0.16%
 0.16% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 29.26%
 29.26% 18.9%
 18.9% 9.72%
 9.72% 10.95%
 10.95% 8.14%
 8.14% 5.04%
 5.04% 2.1%
 2.1% 2.72%
 2.72% 3.42%
 3.42% 5.44%
 5.44% 4.32%
 4.32%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
37° 52' 50.4" North, 126° 7' 7.8" East
37° 19' 25" North, 126° 49' 19" East
36° 45' 44.6" North, 127° 31' 30.3" East
Some cities around Ansan-si sort by population:
• Incheon
		18 km =11.2 mi,  325°
325°
• Suwon
		16.9 km =10.5 mi,  102°
102°
• Bucheon-si
		19.8 km =12.3 mi,  350°
350°
• Anyang-si
		12 km =7.5 mi,  50°
50°
• Hwaseong-si
		13 km =8.1 mi,  181°
181°
• Kwangmyŏng
		17.5 km =10.9 mi,  12°
12°
• Osan
		29.1 km =18.1 mi,  130°
130°
• Yongsan-dong
		28.4 km =17.6 mi,  30°
30°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016