def calc_relative_ratio(rel_pow_low_band, rel_pow_high_band):
    """Calculate ratio of relative power between two bands.

    Parameters
    ----------
    rel_pow_low_band : float
        Relative power of lower band.
    rel_pow_high_band : float
        Relative power of higher band.

    Outputs
    -------
    ratio : float
    """

    return rel_pow_low_band / rel_pow_high_band