Detailed illustration of the accuracy of currently used nuclear-mass models

It is found that the accuracy of the description of the mass strongly depends on the nuclear-mass model and on the region of nuclei to which the model is applied. The best accuracy is obtained by the two recent Chinese models WS3+ and WS4+. Generally, no clear, strong correlation between the accuracy of the description of already known masses by a given model and its predictive power for new masses is observed. However, such a correlation is found for separate models and in separate regions of nuclei, more often for the macroscopic-microscopic models than for the other approaches.