Night Light of Kalk (North Rhine-Westphalia) from space (Germany) Src. Average luminocity for 10x10km area is 83.8375% and for 50x50km: 32.3773%.
Square area 10x10 km:
 31.65%
 31.65% 25.63%
 25.63% 7%
 7% 8.26%
 8.26% 14.43%
 14.43% 6.02%
 6.02% 3.22%
 3.22% 3.64%
 3.64% 0.14%
 0.14% 0%
 0% 0%
 0%Square area 50x50 km:
 6.04%
 6.04% 6.49%
 6.49% 3.06%
 3.06% 3.2%
 3.2% 4.26%
 4.26% 4.79%
 4.79% 4.64%
 4.64% 7.32%
 7.32% 9.07%
 9.07% 14.08%
 14.08% 37.06%
 37.06%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
51° 22' 51.9" North, 6° 18' 10.5" East
50° 56' 24.5" North, 7° 0' 21.8" East
50° 29' 41.9" North, 7° 42' 33" East
Some cities around Kalk sort by population:
• Mülheim
		2.9 km =1.8 mi,  356°
356°
• Deutz
		2.3 km =1.4 mi,  254°
254°
• Humboldtkolonie
		1.2 km =0.7 mi,  220°
220°
• Buchheim
		1.6 km =1 mi,  39°
39°
• Höhenberg
		2.6 km =1.6 mi,  107°
107°
• Ostheim
		2.8 km =1.7 mi,  110°
110°
• Poll
		3.3 km =2.1 mi,  199°
199°
• Buchforst
		1.2 km =0.7 mi,  359°
359°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016