Figure 6.

Ratios of Z-factors for $\overline{p}$ and $\overline{n}$ production, $Z_{\overline{p}}^{pp}$, obtained using various parameterizations of $\overline{p}$-spectra, to the Z-factor calculated with QGSJET-IIm, for α = 2.6: solid red—Tan & Ng (1983), dashed blue—set 1 of Duperray et al. (2003), dotted–dashed green—set 2 of Duperray et al. (2003).