Thumbnail showing a single cloud from the first quadrant. The pixels corresponding to the highlighted dendrogram structures are outlined in the blue contour (in projection); a representative ellipse is drawn in red, with semimajor axis length equal to the second moment along each relevant dimension. All catalog properties for clouds are computed using the pixels inside the “blue” contour region. We find this cloud to lie at the near distance of 2.62 ± 0.4 kpc, implying a mass of (4.8 ± 2.0) × 10⁵ M_⊙.