CH₂DOH and CH₃OD spectra towards the four sources. The observed positions and the assumed v_LSR rest velocities are the following: OMC2 FIR4 (05:35:26.7, –05:09:59), 10.5 km s^-1; CepheusE (23:03:12.7, +61:42:27), –11.4 km s^-1; W3(H₂O) (02:27:04.6, +61:52:26), –48.0 km s^-1; G24.78+0.08 (18:36:12.6, −07:12:11), 111.0 km s^-1. The line intensities are expressed in antenna temperature scale. The curves are Gaussian fits to the detected lines and the dashed lines indicate the expected frequencies of the lines. The small horizontal segment has a width of 5 km s^-1. The broad feature right to the CH₃OD line in Cep E includes the CH₂DOH line (3₂₁−2₂₀ e1) at 133930.2 GHz. The CH₃OD line in G24.78+0.08 appears at a significantly velocity shift so that its identification must be considered as uncertain.