Radio continuum emission at 5.7 GHz of IRAS 18019–2216 from GLOSTAR. The contours are −3, 3, 4, 5, and 6 × 1σ (where σ = 90 μJy beam⁻¹ is the rms of the map). The crosses are the positions of the H₂O masers, as shown in Fig. 2 (top left panel), assuming that the peak emission of the radio continuum emission at 22.22 GHz from our VLA observations lies at the same position as that of this map at 5.7 GHz. The color of the crosses represent the LSR velocity of the masers as indicated in the colorbar. The size of the crosses is proportional to the positional uncertainty of the masers. The beam is shown at the bottom left corner.