def save_name(column):
    """Remove characters from a string to make it good for saving.

    Paramters
    ---------
    column : string

    Returns
    -------
    string
        The column name with special characters removed.
    """
    remove_these = [' (%)', ' (kpc)', ' ']
    replace_with_these = ['', '', '-']
    for remove, replace in zip(remove_these, replace_with_these):
        column = column.lower().replace(remove, replace)
    return column