5 | | The routine `U_prodRinvA_hyb_l` is a call-back routine that has to be provided by the user. In the simplified interface the predefined name of the routine is `prodRinvA_hyb_l_pdaf`, but in the full interface, the user can choose the name of the routine. This routine is a variant of [wiki:U_prodRinvA_l] including the hybrid weight used for the [wiki:ImplementAnalysislknetf hybrid Kalman-nonlinear ensemble transform filter LKNETF]. If you already implemented [wiki:U_prodRinvA_l] you can implement the hybrid variant by adding the hybrid weight `gamma` to the interface and add a multiplication with this value in the loop where `C_l` is computed. |

| 5 | The routine `U_prodRinvA_hyb_l` is a call-back routine that has to be provided by the user. In the simplified interface the predefined name of the routine is `prodRinvA_hyb_l_pdaf`, but in the full interface, the user can choose the name of the routine. |

| 6 | |

| 7 | This routine is a variant of [wiki:U_prodRinvA_l] including the hybrid weight used for the [wiki:ImplementAnalysislknetf hybrid Kalman-nonlinear ensemble transform filter LKNETF]. If you already implemented [wiki:U_prodRinvA_l] you can implement the hybrid variant by adding the hybrid weight `gamma` to the interface and add a multiplication with this value in the loop where `C_l` is computed. |