Depiction of the overlap ratio ${\beta }_{\delta {{\displaystyle \overrightarrow{r}}}_s}$ for a variety of scan points couple in a larger scan grid, i.e. along both scan axis and over up to 16 intervals in the scan grid. The scan interval is equal to about 133 pm. The electron probe is calculated given the parameters given in Section 2.2. The probe amplitude $\left|P\left({{\displaystyle \overrightarrow{r}}}_0\right)\right|$ is shown as an inset. More details on the calculation of this overlap ratio can be found in Appendix A.