Constraints on the primordial isocurvature fraction, β_iso, at k_low = 0.002 Mpc⁻¹ and k_high = 0.100 Mpc⁻¹; the primordial correlation fraction, cos Δ; the isocurvature spectral index, n_ℐℐ; and the correlation spectral index, n_ℛℐ = (n_ℛℛ + n_ℐℐ)/2, for the generally correlated mixed ADI+CDI model (a), for the ADI+NDI model (b), and for the ADI+NVI model (c). All these parameters are derived, and the distributions shown here result from a uniform prior on the primary parameters shown in Fig. 38. However, the effect of the non-flat derived-parameter priors is negligible for all parameters except for n_ℐℐ (and n_ℛℐ) where the prior biases the distribution toward unity. Note that these spectral indices are not well constrained, since we do not have a detection of non-zero isocurvature or correlation amplitude. With a sufficiently small isocurvature or correlation amplitude, an arbitrarily small or large spectral index leads to a very good fit to the data, since the model is then practically adiabatic over the range covered by the Planck data.