Fitting an histogram with landau

Hello everybody,
I have a doubt. When fitting an histogram with the pre-defined landau function, I get 3 parameters.
par[1] is the MPV (as far as I have understood) and par[2] is the sigma.

Now I just realized that, by looking close to the fit function, the Maximum of this function, Which I guess it should be the Max Probable Value (MPV) does NOT match with the par[1] value I get from the fit.

Do you have any idea why? Am I interpreting par[1] in a wrong way?

Thanks a lot


I see. Thanks a lot.
So, basically, nor the MPV nor the sigma are really useful.
Thanks again