Spatial distribution of member stars in the four open clusters. The projected positions are shown in parsecs relative to the cluster center at (0, 0). The blue points represent stars within the tidal radius (bound members), while the red points represent stars in the tidal region (r ≥ R_t). The dashed gray circle in each panel indicates the tidal radius R_t derived in Section 4.1. All clusters show central concentrations and extended distributions of members in the tidal region, particularly evident for NGC 2281. The spatial distributions were constructed using member lists from Hunt & Reffert (2023) and projected distances calculated from Gaia DR3 positions and cluster distances (E(B − V)) from Table 5.