With this option you can specify a list of unknown types which should be used in the calculation of the post_node_rhside_ratio result. By example, if both materi_velocity and condif_temperature are initialised, then you can should to use only the material velocities in the accuracy ratio determination by specifying post_node_rhside_ratio_unknowntypes -materi_velocity.
In case this post_node_rhside_ratio_unknowntypes is not specified, default all principal unknowns present in the calculation will be used.