Catalog of 4916 ¹³CO Molecular Clouds from the MWISP Survey Identified with GDCluster

The clouds were identified from the Milky Way Imaging Scroll Painting (MWISP) survey, covering the second Galactic quadrant (104.75° ≤ l ≤ 150.25°, −5.25° ≤ b ≤ 5.25°), using the GDCluster algorithm (Liu & Du 2025), which incorporates spatial-continuity constraints during Gaussian decomposition and clustering to separate kinematically blended velocity components.Kinematic distances were derived from the line-of-sight velocity (VLSR) using the Galactic rotation curve model of Reid et al. (2019).

Clouds with |VLSR| < 10 km/s were excluded to ensure reliable distance estimates, leaving the final sample of 4916 clouds reported here.Each entry corresponds to a cloud's native GDCluster boundary (prior to any intensity-threshold reprocessing described in the paper) and includes its Galactic coordinates, centroid velocity, kinematic distance, effective radius, velocity dispersion, peak brightness temperature, voxel count, and a velocity-group label (corresponding to the two spiral-arm subgroups defined by VLSR = −23.55 km/s in the paper).