Fig. 3.

Transitions of EtA that appear blended in the observed spectra of G+0.693. All of them have line intensities $>$5 mK, according to the best LTE fit described in the text. The quantum numbers involved in the transition are indicated in the upper left of each panel, and the energies of the upper level are indicated in the upper right. The red thick line depicts the best LTE fit obtained fitting the EtA rotational transitions shown in Fig. 2. The thin blue line shows the predicted molecular emission from all of the molecular species identified in our spectral survey, overplotted to the observed spectra (gray histograms).