Model                                     AIC       deltaAIC        AIC wgtModel Likelihood        no.Par.     -2*LogLike
psi(.),p(.)                             54.84           0.00         0.4925         1.0000              2          50.84
psi(.),p(rain)                          56.29           1.45         0.2385         0.4843              3          50.29
psi(gully),p(.)                         56.84           2.00         0.1812         0.3679              3          50.84
psi(gully),p(rain)                      58.29           3.45         0.0878         0.1782              4          50.29
