Notes. The dataset of 1 mm-combine was obtained by combining the ACA 7-m array and ALMA 12-m array data in Band 6. For the 1 mm-high data of K04166, we used the maps with the natural weighting in the result section to clearly distinguish the characteristics of the polarized emission in the inner and outer regions, such as the position angle of the polarization vectors, by imaging the extended emission. In contrast, we used the maps with Briggs weighting in the discussion section to investigate the transition region (borderline) between the inner and outer regions, which corresponds to the disk size. In addition, the visibility fitting requires us to average the channels with similar frequencies for the 1 mm-combine data. We, thus, extracted two spectral windows that have similar rest frequencies out of the three spectral windows to make the required visibility. That is why their rest frequency is different from that in the 1 mm-high data.