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Owner's of the Garmin Marine GPS System GPSMAP gave it a score of 0 out of 5. Here's how the scores stacked up:
Track—the direction of movement relative to a ground position. Also referred
to as ground track.
Trip Avg. Speed (Moving)—the average speed while moving since the last
reset of the trip computer. Appears as Mov Avg Spd.
Trip Avg. Speed (Total)—the total average speed traveled since the last reset
of the trip computer. Appears as Ttl Avg Spd.
Trip Odometer—the total distance traveled since the trip computer was reset.
Trip Timer (Moving)—the length of time your vehicle has been in motion,
since the trip computer was reset. Appears as Move Timer.
Trip Timer (Total)—the total time the unit has been tracking since the trip
computer was reset.
Ttl Avg Spd—see Trip Avg. Speed (Total).
Turn—the distance between Bearing (BRG) and Track (TRG). L indicates you
should turn left. R indicates you should turn right. The degrees indicates the
difference angle and the number of degrees you should turn.
User Timer—the timer you set on the Main Menu.
Velocity Made Good—the rate of closure on a destination based on your
current speed and course of travel. Appears as VMG.
Vertical Speed—the rate of climb or descent.
Voltage—the direct current voltage level of an external power source.
Water Speed (Marine Only)—the data acquired from measurement devices
interfaced to the unit is used to calculate your current speed over water.
Water Temperature (Marine Only)—the temperature of water at a measured
depth using measurement devices interfaced to the unit.
Waypoint (Destination)—the last point on a route, your destination. Appears
as Dest Wpt.
Waypoint (Next)—the next waypoint in your route. Appears as Next Wpt.
Weather–Dew Point—the dewpoint at the nearest weather reporting station.
Weather–Pressure—the surface pressure at the nearest weather reporting
station.
Weather–Relative Humidity—the relative humidity at the nearest weather
reporting station.
Weather–Temperature—the temperature at the nearest weather reporting
station.
Weather–Wind—the wind speed and direction at the nearest weather reporting
station.
XM Audio—the artist and song title of the XM audio channel currently
playing.
XM Signal—the strength of the XM signal.
132 GPSMAP 378/478 Owner’s Manual
APPendIX > dAtA fIeld oPtIons
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