Significance level of the χ²-test for the WDLFs shown in Fig. 5. It is clear that, under the error estimation presented in Eq. (8), magnetic dipole moments larger than μ₁₂ = 5 can be discarded at the 99.9% confidence level. Black (red) line shows the result when the value of σ_Uni (Max [σ_SDSS,   σ_SSS,   σ_Uni]) is adopted as the uncertainty – see Table 1.