Lanthanide fraction of our sample of stars and of the literature r_lim, r-I, and r-II stars. The symbols are the same as in Fig. 2). The points are coral when [Ba/Eu] < −0.3 and gray when [Ba/Eu] ≥ −0.3. The dotted line is the lanthanide fraction of the KN of the neutron star merger GW170817 (Kilpatrick et al. 2017; Chornock et al. 2017; Tanaka et al. 2017; Tanvir et al. 2017; Troja et al. 2017). The error bar shows the mean uncertainty of the [Sr/Ba] abundances and the derived log X_Las.