Updates the displayed airspeed, altitude, climb rate Text

def updateAARText(self):
        'Updates the displayed airspeed, altitude, climb rate Text'
        self.airspeedText.set_text('AR:   %.1f m/s' % self.airspeed)
        self.altitudeText.set_text('ALT: %.1f m   ' % self.relAlt)
        self.climbRateText.set_text('CR:   %.1f m/s' % self.climbRate)