Model                                     AIC       deltaAIC        AIC wgtModel Likelihood        no.Par.     -2*LogLike
psi(.),p(.)                            220.13           0.00         0.7181         1.0000              2         216.13
psi(gully),p(.)                        222.00           1.87         0.2819         0.3926              3         216.00
