Average abundances of neutron-capture elements Y, Zr, Ba, La, Ce, Pr, Nd, Sm, and Eu in M 80. The associated rms scatters are also shown. In the upper panel, the solar scaled abundances of pure r-process (dashed line) and of pure s-process (dotted line) from Simmerer et al. (2004) are shown. In the lower panel, the attempt to best fit observed abundances with solar scaled pure r-process and s-process abundances (Simmerer et al. 2004) is shown (light blue line): the scaling factor adopted are −1.27 dex and −1.81 dex for the r- and s-process, respectively. The black dotted line connects the abundances in the r + s group of the GC M 22 derived by Roederer et al. (2011).