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Compass Error from Amplitudes Observed on the Visible Horizon   Altitude Correction for Air Temperature   Table of Offsets   Latitude and Longitude Factors   Altitude Correction for Atmospheric Pressure   Altitude Factors & Change of Altitude   Pub 229   Compass Error from Amplitudes Observed on the Celestial Horizon   Meridian Angle and Altitude of a Body on the Prime Vertical Circle

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