Best-fit value (symbols), 68% (dashed error bars) and 95% (solid error bars) CIs for C to Fe source parameters from the fit on CREAM-II, HEAO-3, and TRACER data. Top panel: source spectral index αi. Middle panel: relative abundances qi. The results from the analysis of the HEAO-3 group (Engelmann et al. 1990) are shown as green boxes, and those from the TRACER group (Ave et al. 2009) as orange boxes. The yellow boxes correspond to a leaky-box analysis of the abundances on HEAO-3 data performed in Putze et al. (2009). Bottom panel: low-energy source parameter ηS (see Eq. (6)). Only the results from HEAO-3 data are plotted (for CREAM-II, ηS is set to −1, and for TRACER, the scatter is so large that the values are meaningless).
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