Radial velocities of 71 individual features in the OMC-1 outflow for the same 1′  ×  1′ field of view as in Fig. 1. The orientation of the image – with the Earth to the top left – illustrates the radial velocities associated with each of the objects for which proper motions are shown in Fig. 1. Blue and red-shifted emissions are shown as blue and red arrows, respectively. The length of the longest arrows corresponds to 50 km s^-1 in the local standard of rest.