Night Light of Umm as Sāhik (Eastern Province) from space (Saudi Arabia) Src. Average luminocity for 10x10km area is 74.0208% and for 50x50km: 42.1844%.
Square area 10x10 km:
 7.2%
 21.78%
 14.2%
 12.5%
 22.73%
 11.17%
 5.68%
 2.84%
 1.89%
 0%
 0%Square area 50x50 km:
 6.66%
 8.58%
 5.2%
 5.81%
 9.38%
 6.69%
 6.1%
 6.96%
 8.15%
 9.04%
 27.43%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
27° 16' 49" North, 49° 12' 47.8" East
26° 39' 13" North, 49° 54' 59" East
26° 1' 24.5" North, 50° 37' 10.3" East
Some cities around Umm as Sāhik sort by population:
• Dammam
		30.7 km =19.1 mi, 
142°
• Al Qaţīf
		13.4 km =8.3 mi, 
136°
• Tārūt
		15.2 km =9.4 mi, 
125°
• Sayhāt
		23 km =14.3 mi, 
145°
• Şafwá
		3.9 km =2.4 mi, 
96°
• Raḩīmah
		15.7 km =9.8 mi, 
67°
• Al Awjām
		10.4 km =6.5 mi, 
165°
• At Tūbī
		13 km =8.1 mi, 
144°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016