Upper panel: EW of He i λ5876 vs. temperature/spectral type for B-type stars. Lower panel: ratio of Hα to He i λ5876 equivalent width vs. temperature/spectral type. Pluses denote dwarfs (Lum. V) from Table 1 while asterisks denote giants (Lum. III). Triangles are model atmospheres from Lanz & Hubeny (2007). The dashed curve shows a third-order polynomial fit to the pluses and asterisks. The solid line and dotted lines show the measurements and 1σ uncertainties for Star A.