Hα, Hβ, and Ca ii K-line region shown for the two giant stars with the model fit overlaid (indicated by a solid line which is colored red in the online journal). The spectra of the two stars are virtually identical. The Ca ii spectrum displays an interstellar absorption feature blended with the Fe i line at −3 Å from the line core in the LEID 54064 spectrum, but distinct from the Fe i feature in the LEID 54084 spectrum. Weak emission may be present on the long-wavelength wing of the Hα line and on both wings of the Hβ line. The success of the model can be seen from the agreement between observed and calculated chromospheric profiles.