[pFit, pStd, warningMessages] = pwPleFit(iPar) Fitting all parameters but fixing iPar.
iPar Parameter which is temporarilly fixed and not fitted.
pFit Fitted parameter values (not on a log-scale)
pStd Estimated standard deviation of the parameters based on the
covariance matrix approach.
warningMessages
All warnings which may have occurred during fitting.
Plots of the Profile Likelihood are marked with red circles
if one or more warnings have been issued.