Night Light of Southwick (Massachusetts) from space (United States) Src. Average luminocity for 10x10km area is 17.5667% and for 50x50km: 26.9951%.
Square area 10x10 km:
 0%
 1.11%
 3.17%
 2.06%
 2.06%
 1.75%
 2.38%
 4.92%
 11.75%
 17.3%
 53.49%Square area 50x50 km:
 3.51%
 4.2%
 4.72%
 3.86%
 4.57%
 4.79%
 3.98%
 4.86%
 6.76%
 9.39%
 49.36%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
42° 34' 29.1" North, 73° 28' 24.6" West
42° 3' 17.4" North, 72° 46' 13.3" West
41° 31' 50.2" North, 72° 4' 2.1" West
Some cities around Southwick sort by population:
• Springfield
		15.8 km =9.8 mi, 
70°
• Chicopee
		17 km =10.6 mi, 
52°
• Enfield
		17.1 km =10.6 mi, 
120°
• Westfield
		8 km =5 mi, 
12°
• Agawam
		12.9 km =8 mi, 
82°
• West Springfield
		13.7 km =8.5 mi, 
64°
• Longmeadow
		15.5 km =9.6 mi, 
91°
• Thompsonville
		15.5 km =9.6 mi, 
114°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016