Main Menu Features and Settings Data Field Options ** Available only with the GPSMAP 78S and GPSMAP 78Sc. 20 GPSMAP 78 Series Owner’s Manual Data Field Description Bearing The direction from your current location to a destination. **Cadence (cadence accessory required) Revolutions of the crank arm or strides per minute. Course The direction from your starting location to a destination. Depth The depth of the water. Requires a connection to a NMEA 0183 depth-capable device to acquire data (page 24). **Descent - Average The average vertical distance of descent. **Descent - Maximum The maximum descent rate in feet/meter per minute. **Descent - Total The total elevation distance descended.
Distance to Dest. The distance to your final destination. Data Field Description Accuracy of GPS The margin of error for your exact location. For example, your GPS location is accurate to within +/- 12 feet. **Ambient Pressure The uncalibrated environmental pressure. **Ascent - Average The average vertical distance of ascent. **Ascent - Maximum The maximum ascent rate in feet/meters per minute. **Ascent - Total The total elevation distance ascended. **Barometer The calibrated current pressure. Battery Level The remaining battery power.