Azimuthally averaged radial profiles of the integrated intensity (left) and brightness temperature (right). The H₂O line at 183 GHz imaged with a robust parameter of 0.0 is indicated in blue, the H₂O line at 321 GHz in orange, and the continuum emission in black. In the left panel the continuum emission is presented in arbitrary units, and the upper limit on the water snow line location is indicated with the vertical red line. Note the difference in the radial axes. The beams are indicated with the horizontal bars in the top-right corner.