The Berge-Sponer plot between $\Delta G_{v+\frac{1}{2}}=(\varepsilon_{v+1}-\varepsilon_{v})$ and $(v+1)$ for CO ia a straight line with slope of $-14\,\mathrm{cm^{-1}}$ and intercept of $2170\,\mathrm{cm^{-1}}$. The approximate value of dissociation energy of CO (in $\mathrm{cm^{-1}}$) is (Assume CO as an Anharmonic oscillator with energy expression.