One final option to consider with BVS is to avoid occupancy weighted methods. If one instead proposes that V3 is exclusively +4 and that V4 is exclusively +5 (their closest fits for traditional, single state site BVS analysis), then a +3 oxidation state is required for V1 and V2 to achieve charge balance. The differences with this procedure are -0.294 for V3 and +0.078 for V4 and cannot be calculated for the mixed Ni/V sites. Therefore, this option still includes three oxidation states while increasing the difference for the V3 ion. It, as a result, offers no descriptive advantage, and the original three state case is accepted as the superior model.