Sixteen lines predicted to be the strongest toward the position offset by 1 beam (0.5″) from IRAS16293B: the observations are shown in the black, the synthetic spectrum for CD₃OD in red, and other species identified as part of PILS in blue. The dashed line indicates the 3σ RMS level of the data per 1 km s⁻¹ (1 km s⁻¹ is the typical FWHM line width of the lines toward this position).