Table 2: Uncertainties on abundances. $\log{A_{pf}}$: output with the atmospheric parameters adopted; $\log{A_{pT}}$: output by altering 1$\sigma $ on adopted $T\rm _{eff}$; $\log{A_{pmt}}$: output by altering 1$\sigma $ on adopted metallicity; $\log{A_{pl}}$: output by altering 1$\sigma $ on adopted $\log g$; $\log{A_{p\xi}}$: output by altering 1$\sigma $ on adopted microturbulent velocity $\xi $; $\sigma _l$: $\sigma_{\log\epsilon}$, the uncertainty on $\log\epsilon$(X) from Table 4; $\sigma _f$: $\sigma _{\rm [X/Fe]}$, the uncertainty on [Ru/Fe] or [Hf/Fe] from Table 4.

El.		 $\lambda $ ($\rm\AA$) $\log{A_{pf}}$ $\log{A_{pT}}$ $\log{A_{pmt}}$ $\log{A_{pl}}$ $\log{A_{p\xi}}$ $\sigma _l$ $\sigma _f$
      HD181053          
Ru 4080.574 1.99 2.01 1.91 2.01 1.99 0.47 0.46
Ru 4757.856 2.09 2.19 1.99 2.11 2.09    
Hf 4080.437 1.13 1.14 1.13 1.28 1.13 0.17 0.15
Hf 4093.155 1.18 1.19 1.18 1.33 1.18    
      HD 87080          
Ru 4080.574 3.24 3.34 3.20 3.24 3.19 0.09 0.11
Ru 4757.856 3.44 3.54 3.40 3.44 3.44    
Hf 4080.437 2.68 2.70 2.64 2.72 2.63 0.06 0.09
Hf 4093.155 2.48 2.50 2.44 2.52 2.46    


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