Night Light of Watertown (Massachusetts) from space (United States) Src. Average luminocity for 10x10km area is 92.1667% and for 50x50km: 58.6827%.
Square area 10x10 km:
 41.43%
 41.43% 26.98%
 26.98% 14.76%
 14.76% 13.17%
 13.17% 3.65%
 3.65% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 14.11%
 14.11% 12.51%
 12.51% 6.86%
 6.86% 8.08%
 8.08% 10.61%
 10.61% 9.6%
 9.6% 5.93%
 5.93% 4.78%
 4.78% 8.37%
 8.37% 14.49%
 14.49% 4.65%
 4.65%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
42° 53' 17.7" North, 71° 53' 9.5" West
42° 22' 15.3" North, 71° 10' 58.2" West
41° 50' 57.6" North, 70° 28' 47" West
Some cities around Watertown sort by population:
• Cambridge
		6.4 km =4 mi,  85°
85°
• Newton
		4.3 km =2.7 mi,  209°
209°
• Somerville
		7.1 km =4.4 mi,  74°
74°
• Waltham
		4.4 km =2.7 mi,  278°
278°
• Brookline
		6.7 km =4.2 mi,  130°
130°
• Medford
		8.2 km =5.1 mi,  50°
50°
• Arlington
		5.4 km =3.4 mi,  23°
23°
• Belmont
		2.8 km =1.7 mi,  7°
7°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016