For the given reactions ${\mathrm{Sn}}^{2+}+2{\mathrm{e}}^{-}\to \mathrm{Sn}$, ${\mathrm{Sn}}^{4+}+4{\mathrm{e}}^{-}\to \mathrm{Sn}$ the electrode potentials are; ${\mathrm{E}}_{{\mathrm{Sn}}^{2+}/\mathrm{Sn}}^{\mathrm{O}}=-0.140\mathrm{V}\text{ and }{\mathrm{E}}_{{\mathrm{Sn}}^{4+}/\mathrm{Sn}}^{\mathrm{O}}=0.010\mathrm{V}$. The magnitude of standard electrode potential for ${\mathrm{Sn}}^{4+}/{\mathrm{Sn}}^{2+}\text{ i.e. }{\mathrm{E}}_{{\mathrm{Sn}}^{4+}/{\mathrm{Sn}}^{2+}}^{\mathrm{o}}$ is ___________ $\times {10}^{-2}\mathrm{V}$. (Nearest integer)