User's Manual

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UTC Universal Coordinated Time, formerly GMT or
Greenwich Mean Time.
VALID Data fix or not
LATITUDE A north/south measurement of position perpendicular to
the earth's polar axis.
LONGITUDE An east/west measurement of position in relation to the
Prime Meridian, an imaginary circle that passes through
the north and south poles.
HEIGHT The altitude of a place above sea level or ground level.
SPEED Rate of motion
HEADING The compass direction in which the longitudinal axis of a
ship or aircraft points
DSTA DGPS station ID number
DAGE Time in seconds since last DPGS update
PDOP (Positional Dilution Of Precision) ; Position accuracy;
3D-coordinates
HDOP (Horizontal Dilution Of Precision); horizontal accuracy;
2D-coordinates
VDOP (Vertical Dilution Of Precision); vertical accuracy; height
NSAT Number of Satellite (in Used, in View)
SID Satellite ID
ELEVATION The elevation of the satellite
AZIMUTH Line-Of-Sight angle of the satellite