Comparison of d_OB and d_kin,lamost with d_wise. The two panels share the same x-axis (d_wise), with the y-axes corresponding to d_OB and d_kin,lamost, respectively. Magenta circles denote maser parallax distances (d_maser,wise), and black circles denote kinematic distances (d_kin,wise) from H II cat_V2.3. Error bars are shown in purple. A gray dashed line of y = x is included in each panel for reference. Open circles in panel (b) indicate outliers relative to the y = x line.