Upper: coronal to photospheric abundance ratios for the Sun (black squares), τ Boo (red circles and filled diamonds), and two other intermediate-activity stars (magenta empty diamonds for κ¹ Cet and brown triangles for ϵ Eri). Elements are sorted as in Fig. 5. Lower: same plot but with all values divided by the Fe abundance in a logarithmic scale. The FIP bias in the solar corona is indicated by the shaded (orange) strip, and for τ Boo the abundances obtained with Method 2 are not shown for clarity.