This clearly indicates that in the subset of good predictions the domain boundaries are located with very high accuracy. Actually, a deviation of 1-3 residues is probably a very minor mistake in the process of design a protein construct that has, on average, a high probability to be well folded and conformationally homogeneous. It is also interesting to observe that while the Delta_b mean values are negative, the mean Delta_e values are larger than 0, indicating that predicted domains tend to be slightly longer than real domains.