Moment 1 maps of the different CH₃OH transitions found in our targets (from top to bottom in increasing E_up). From left to right are L1551 IRS 5, Haro 5a IRS, V346 Nor, and OO Ser. The color scale of each target has been centered on the systemic velocity of the protostar (see Table 2), and is limited to ±3 km s⁻¹ with respect to this velocity. The contours trace the continuum emission and are at the same levels as in Fig. 1. The star markers indicate the positions of the protostars. The beams are shown in the bottom left of each panel. The southern disk of L1551 IRS 5 is not seen in the maps as it is quite faint and its systemic velocity is bluer than the limits of the color scale of the plot.