Garmin GNX 20 Installation Instructions page 4

Sentence Description
BOD Bearing (origin to destination)
DBT Depth below transducer
DTM Datum being used
DPT Depth
GGA Global positioning system fix data
GLL Geographic position (latitude and longitude)
GRMB GPS data
GRME GPS position error data
GSA GNSS DOP and active satellites
GSV GNSS satellites in view
HDG Heading, deviation, and variation
HDM Heading, magnetic
HDT Heading, true
MDA Meteorological composite
MTW Water temperature
MWD Wind direction and speed
MWV Wind speed and angle
RMB Recommended minimum navigation information
RMC Recommended minimum specific GNSS data
THS Heading sensor data
VHW Water speed and heading
WPL Waypoint location
XTE Cross track error
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