Example fit of Eq. 5 to the corrected correlation functions after Eq. 3 has been used to remove the PYTHIA8+GEANT3 overcompensation of the K$^*(892)$, for $\pi^\pm$K$^0_{\rm S}$ from $\sqrt{s}=13$ TeV pp collisions for $0-100\%$ multiplicity class and $k_T>0$ (left), $0-100\%$ multiplicity class and $k_{\rm T}< 0.5$ GeV/$c$ (center), and $0-5\%$ multiplicity class and $k_{\rm T}< 0.5$ GeV/$c$ (right). Statistical uncertainties are represented as bars.