The results of these surface models have been presented in fig. . Notice that the three-Ni cluster mechanism expects the LOER active site density to increase with the nickel concentration throughout the entirety of the probed domain. On the other hand, the shear plane clustering shows a lower tendency for LOER than would be expected for purely 3-atom clustering. Since 20% nickel content is within the bounds of shear plane clustering , it is reasonable to assume that the orange points more closely represents the actual system in this end of the domain. When considering only these two methods of clustering, it would therefore be expected that peak LOER tendency is found at a point between x ≈ 12.5% and x ≈ 20%, as this is the region where shear plane clustering becomes dominant while the predicted LOER tendency of three-Ni clustering is high.