${{\boldsymbol \Xi}_{{c}}^{'0}}$ $I(J^P)$ = $1/2(1/2^{+})$
The ${{\mathit \Xi}_{{c}}^{'0}}$ and ${{\mathit \Xi}_{{c}}^{'+}}$ presumably complete the SU(3) sextet whose other members are the ${{\mathit \Sigma}_{{c}}^{++}}$, ${{\mathit \Sigma}_{{c}}^{+}}$, ${{\mathit \Sigma}_{{c}}^{0}}$, and ${{\mathit \Omega}_{{c}}^{0}}$: see Fig.$~$3 in the note on Charmed Baryons. The quantum numbers given above come from this presumption but have not been measured.