Model                                     AIC       deltaAIC        AIC wgtModel Likelihood        no.Par.     -2*LogLike
psi(.),p(.)                             35.03           0.00         0.5147         1.0000              2          31.03
psi(.),p(rain)                          36.80           1.77         0.2124         0.4127              3          30.80
psi(gully),p(.)                         36.99           1.96         0.1932         0.3753              3          30.99
psi(gully),p(rain)                      38.76           3.73         0.0797         0.1549              4          30.76
