Geometrical depth stratification of various physical parameters perpendicular to the axis of a filament in the MHD simulation. The locations of the plotted cuts are indicated by red bars in Fig. 18a. Panels in the first, second, and third column represent the head, middle, and tail of the filament, respectively. From top to bottom (for each column): T, B, γ, | B_z |, B_r, and ∂B/∂d are plotted. Lower, middle, and upper white curves in all panels show log τ = 0.0,−0.9,−2.5 levels, respectively.