def calculation_area(number_of_heights=9, delta_height=0.2, door_width=0.8):
    """
    Returns a list with the equivalent area fraction of the door for each
    probe
    The list provides a number of areas equal to the number of heights
    measured. Some heights (0.4 m and 1.6 m) have three pressure probes.
    
    Parameters:
    ----------
    number_of_heights: number of heights at which pressure probes were located
        int

    delta_height: fraction of the door corresponding to a single pressure probe
        float
        
    door_width: width of the door
        float
        
    Returns:
    -------
    areas = list with the corresponding door area for each pressure probe height
        list
    """
    areas = [delta_height * door_width] * number_of_heights
    
    return areas