newline , Header XGPS /position/longitude-deg longitude float %03.4f /position/latitude-deg Latitude float %03.4f /position/altitude-ft Altitude in meters MSL float %05.4f 0.3048 /orientation/heading-deg Track-along-ground from true north float %03.3f velocities/groundspeed-kt Groundspeed in meters/sec float %03.3f 0.514444