The MuFi model in Fig. shows large uncertainty ranges. The scaling parameter ϕ amounts to only 0.05, which shows that LoFi and HiFi data are disconnected, i.e. the LoFi data is almost meaningless for the MuFi prediction. This lacking data backup for large areas of the energy surface leads to the comparably large uncertainties compared to other examples of this study. The MuFi approach therefore automatically detects the non-suitability of the LoFi data, indicating that no further data at this LoFi level is needed.