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6
Output Messages (Standard NMEA
Sentences)
6.1 GGA-Fix Data
Time, position, and fix related data for the receiver
$--GGA,UTCtime,lat,uLat,lon,uLon,FS,numSv,HDOP,msl,uMsl,sep,uSep,diffAge,
diffSta*CS<CR><LF>
$GPGGA,235316.000,2959.9925,S,12000.0090,E,1,06,1.21,62.77,M,0.00,M,,*7B
Message ID, GGA sentence header, ’--‘ is the
talker identifier
GNSS quality indicator (Remark [1]), mandatory
Number of satellites in use, 00 - 24
Horizontal dilution of precision (HDOP)
Antenna altitude above mean-sea-level
units of antenna altitude, meters, M
Geoidal separation, the difference between the
WGS-84 earth ellipsoid surface and mean-sea-
level (geoid) surface, "-" = mean-sea-level surface
below WGS-84 ellipsoid surface.