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The relative gravity stations
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National Gravity Network
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266 stations have been installed, distributed to different areas across the Kingdom.
The stations are distributed according to the GPS points and to the old and new spot heights.
The stations are positioned according to the vertical network and in-between the absolute Earth gravity stations .
The baseline for calibrating the Earth gravity equipment is located between the absolute Earth gravity stations in the Governorates of Jeddah and Taif .
Use CG5 gravimeter for station observations.
Project's date of completion was set for end of 2014 .
Network accuracy is grade 2 , category 1.
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The relative gravity stations
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