What do the values of the GPS screen represent?

1. Altitude according to the GPS

   This value represents the altitude calculated based on the GPS chip.

2. Field altitude

   This value represents the altitude based on the location on the map. It may differ from the GPS altitude.

3. Change unit button

   This button changes the unit used to display GPS coordinates. Coordinates can be expressed in degrees minutes seconds or in UTM.

4. GPS coordinates

   Position according to the GPS chip, expressed using the unit chosen when the change units button is pressed.