def _compute_anelestic_attenuation_term(self, C, dists):
        """
        Compute and return anelastic attenuation term in equation 5,
        page 970.
        """
        f_aat = np.zeros_like(dists.rjb)
        idx = dists.rjb > 80.0
        f_aat[idx] = C["b10"] * (dists.rjb[idx] - 80.0)
        return f_aat
Compute and return anelastic attenuation term in equation 5,
        page 970.