Widths of the H₂ 2.122 μm and [Fe ii] 1.644  μm jet components plotted against distance from each source, corrected for flow inclination angle and seeing. Filled red circles indicate H₂ data; blue squares show [Fe ii] data. The arrows show the effective angular resolution (FWHM) measured from Gaussian fits to continuum data in the H and K-bands. Zero offset in each x-axis corresponds to the source continuum position; positive offsets increase to the left in each panel in Figs. 1 and 2. Note that only the brighter, north-easterly flow lobe is plotted for HH 300-IRS.