Widths (ΔV_1/2; indicated by the horizontal span of the rectangles) and the peak velocities relative to the source (represented by the vertical short bars in the middle of the rectangles) of the broad features. The error bars exhibited on both left and right sides of each rectangle show the uncertainties of ΔV_1/2. The S/N number on the upper left of each rectangle is the ratio of the peak temperature of each line to the RMS. The number on the upper right of each rectangle is ΔV_1/2 in km s⁻¹. The dashed boxes indicate where the features have an S/N larger than 5σ.