This dialog window serves for individual trigonometric calculation of the station height. Its control is the same as a window for the free station, but you enter only the data for the height calculation (station's coordinates, coordinates of the instrument height and the heights of the orientations, height of the targets on the orientations and horizontal difference or the zenith distances).
This dialog window allows entering both the zenith distances (Z) and horizontal difference (dH), enter only the available data for each orientation.