Correlations between the normalisation of the inelastic (left panels) or production (right panels) cross-sections and log₁₀(K₀), for models SLIM (top panels) and QUAINT (bottom panels). The various colours correspond to the normalisations of cross-sections involved in different CR species: Li (green), Be (orange), B (blue), N (turquoise), and ³He (crimson). The various symbols and line styles correspond to the post-fit values and ellipses (for the previously listed species) from various fit configurations: separate Li/C, Be/C, and B/C fits (“×” symbols and solid lines), combined Li/C, Be/C, and B/C fit (LiBeB for short, “+” symbols and dotted lines), combined LiBeB+N/O+³He+⁴He fit (“⋆” symbols and dashed lines). The horizontal grey dashed lines highlights the case of using unmodified cross-section datasets (T99 for inelastic and G17 for production, see Appendix B), i.e. : the subscript in 𝒩 indicates the CR species associated with this nuisance parameter; the superscript shows the reaction used as a proxy for this CR. For production cross-sections (right panels), the normalisation parameters are not directly the value of the nuisance parameter, but are effective parameters, see Eq. (11). See text for discussion.