Similar representation as in Fig. \ref{fig:Results13}, where the \pL interaction is modelled using NLO19 (cyan) \Chieft potentials with cut-off $\Lambda=$600 \MeV . This leads to an improved description of the low momentum region. The reduced $\chi^2$, for $\ks<300 $\MeVc, equals 2.0 in case the \pSo is modelled by \Chieft (panel a) and 1.8 in case the \pSo final state interaction is ignored (panel b).