Plot of absorber rest equivalent width vs. SDSS galaxy redshift, for the list of absorbers. Symbols are the same as in Figure  6. The dashed vertical line separates absorbers with z ⩾ 0.01. This redshift separator was chosen as a guide to separate absorbers due to Galactic sightlines and Virgo Cluster galaxies from "true" extragalactic systems, based on the outer boundary to the Virgo Cluster (Binggeli et al. 1993).