In this section, we present results of the confidence-level (CL) test proposed in Ref. [5]. The CL test is based on the assumption that the CVC hypothesis is valid up to at least %, which implies that a set of structure-dependent corrections should produce statistically consistent set of -values. Assuming the validity of the calculated corrections [7], the empirical ISB corrections can be defined as:

By the least-square minimization of the appropriate , and treating the value of as a single adjustable parameter, one can attempt to bring the set of empirical values as close as possible to the set of .

The empirical ISB corrections deduced in this way are tabulated in Table 2 and illustrated in Fig. 11. Table 2 also lists individual contributions to the budget. The obtained per degree of freedom () is . This number is twice as large as that quoted in our previous work [16], because of the large uncertainty of for the Cl S transition. Other than that, both previous and present calculations have difficulty in reproducing the strong increase for . Our is also higher than the perturbative-model values reported in Ref. [5] ( ), shell model with Woods-Saxon (SM-WS) radial wave functions (0.4) [3], shell model with Hartree-Fock (SM-HF) radial wave functions (2.0) [45,4], Skyrme-Hartree-Fock with RPA (2.1) [12] , and relativistic Hartree-Fock plus RPA model (RHF-RPA) [13], which yields .