HO or HO, CH₃OH, NH₃, and CO column densities in the coma derived by the MIRO instrument from the maps (date indicated in each plot). Each measurement is derived from the average line intensity from points within 2.5 km projected distance from the nucleus and 60° in position angle (PA) over the sky along the comet jet axis. The mean jet PA is provided in the upper left corner for each molecule. The horizontal axis is the projected distance from the nucleus on the jet (Sun) side for positive values. The vertical scale is the derived column density in cm⁻². The hatched region corresponds to pointing against the nucleus (line in absorption).