def format_minsep(minsep):
    """
    Returns string representation of the minsep
    """

    string = ''
    for key, value in minsep.items():
        if isinstance(value, (list, tuple)):
            string += f'{key}={value[0]:.2f}-{value[1]:.2f} '
        else:
            string += f'{key}={value:.2f} '
    return string