Furuno FE-700 Service Manual page 34

5.2 SENTENCE DESCRIPTION
GGA - Global positioning system (GPS) fix data
Time, position and fix related data for a GPS receiver.
*Differential reference station ID, 0000-1023
*Age of differential GPS data
*Unit of geoid height, m
*Geoid height (-999 - 0999)
*Unit of antenna height, m
*Antenna height (-9999 - 99999) Checksum
*Horizontal dilution of precision (00 - 99)
$--GGA, hhmmss.ss, llll.ll, a, yyyyy.yy, a, x, xx, xx, xx, M, xx, M, xx, xxxx*hh<CR><LF>
* Number of satellite in use
Status (1 = GPS 2=DGPS 0 = data invalid)
Longitude - E/W
Latitude - N/S
*UTC of position
* : Not used
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