The effect of Rhigh on the properties of the |$\mathcal {Q{\small --}U}$| plane in SANE model. Only the Rhigh = 1 model can produce loops (a* = −0.9375, i = 10°). See https://doi.org/10.5281/zenodo.8302230 for an animation of the Rhigh = 1 and Rhigh = 160 cases.