Hey! I have a problem. The problem is simple: calculate CO2 rotational constant. I have values for J (ground state and excited state), with those grades I have to calculate rotational constant. I know that for J=0,2,4.. it is just in ground state and for J=1,3,5..it is excited state. But how do I can calculate B(0) and B(1), because with those I can calculate B(e). I also know that I have to plot and from slope I get those B grades, but what are in x/y-axis?