Statistical results of magnetic dip and thread characteristics in the Low-T (left column) and High-T (right column) models. Panels a, b: fractions of different types of magnetic field lines; panels c, d: fractions of different types of threads; panels e, f: scatter plots of the field-line length versus mean thread length; panels g, h: scatter plots of the effective gravity of the dip versus the thread length. The blue solid circles denote the single-dipped cases, and the red solid circles denote the multidipped cases. The dashed lines marked in blue, red, and green display the fittings to single-dipped cases, multidipped cases, and all data points, respectively.