Fit results for the parameters δ and K₀/L of our models with fragmentation in Type I/a SNRs. Results are shown for E_min =  2, 5 and 10 GeV nucleon^-1 (top to bottom), for the reference model and for the SNR models I/a # 1, # 2 and # 3 (left to right) of Table 2. The shaded areas represent the 1-, 2- and 3-σ contour limits. The markers “ × ” indicate the best-fit parameters for each configuration; the χ²/d.f. ratio is reported in each panel.