Selection of transitions of propionamide, C₂H₅C(O)NH₂, v = 0 covered by the ReMoCA survey. The synthetic spectrum of C₂H₅C(O)NH₂, v = 0 used to derive the upper limit to its column density is displayed in red and overlaidon the black spectrum observed toward the equatorial offset position (1.58′′, −2.72′′) relative to the phase center. The central frequency and width are indicated in MHz below each panel. The angular resolution (HPBW) is also indicated. The y-axis is labeled in brightness temperature units (K). The dotted line indicates the 3σ noise level.