Model                                     AIC       deltaAIC        AIC wgtModel Likelihood        no.Par.     -2*LogLike
psi(gully),p(.)                         16.03           0.00         0.3725         1.0000              3          10.03
psi(.),p(.)                             16.55           0.52         0.2872         0.7711              2          12.55
psi(gully),p(rain)                      17.35           1.32         0.1925         0.5169              4           9.35
psi(.),p(rain)                          17.88           1.85         0.1477         0.3965              3          11.88
