Model                                     AIC       deltaAIC        AIC wgtModel Likelihood        no.Par.     -2*LogLike
psi(gully),p(.)                         71.56           0.00         0.4933         1.0000              3          65.56
psi(.),p(.)                             73.02           1.46         0.2377         0.4819              2          69.02
psi(gully),p(rain)                      73.56           2.00         0.1815         0.3679              4          65.56
psi(.),p(rain)                          75.02           3.46         0.0875         0.1773              3          69.02
