Fields considered in this work along with sources found in this study. Blue circles and orange squares mark the location of sources with a size proportional to the square root of the associated flux density at 220 GHz (S₂₂₀ > 8 mJy). Blue circles denote sources designated as synchrotron dominated, whereas orange squares denote dusty sources. The two bottom panels are connected at right ascension 54.5°, which means that season 2 is a continuous strip running from approximately 3° to 106° in right ascension. The lower density of sources in the bottom panel is due to the exclusive presence of data from season 2 in that area, without any overlap from other seasons.