I have following info: plot of $\chi^2$ minimization of 208-Rn Coulomb excitation data, Surface corresponds to regions $\chi^2 < \chi^2 + 1$ with error bars of 1$\sigma$, mean lifetime is 8 $\pm$ 0.05 ps. Using this I should be able to excract the quadrupole moment and its error from that Surface. In plot y-axis is $ME_02$ and x-axis $ME_22$ denoting transitional and diagonal matrix elements.
Any tips on what I should do ?
I took the minimum$\chi^2$ valued from the graph, it was 0.35 and drew the 1$\sigma$ error bars to that.