The data that support the findings of this study are uploaded here. All the data files are self-explanatory. They contain individual column names. The experimental data for Fig. 4(a) are in Fig4a_experimental_data.csv under the folders Fig_4>Fig_4a. To convert to binding energy there is a fitting algorithm in the Python code Feshbach_Fit.py .

1. DFG-FWF Forschergruppe FOR2247 under the FWF project number I4343-N36. 2. Wittgenstein prize grant under project number Z336-N36 3. UK Engineering and Physical Sciences Research Council (EPSRC) Grants EP/W00299X/1.