Limiting equivalent conductivities of different ions are given below.
Ion                                    K⁺              Na⁺         ${\mathrm{SO}}_4^{2-}$
${\mathrm{\lambda }}_{\mathrm{eq}}^0/{\mathrm{Scm}}^2{\mathrm{eq}}^{-1}$               73            81            58.8
The limiting equivalent conductivity of the salt NaKSO₄ is ____ Scm²eq^–1