Comparison of the magnetic field inclination between model (red) and observations for pore 3 of GM21 (black) as a function of horizontal distance normalized to the pore radius. The pore radius for the model was assumed to be 0.44 Mm, while the radius of the observed pore is 2.5 Mm. The observational values are taken along the line perpendicular to the slit. Model values are mirrored around x = 0 and are shown for the bottom (solid line), middle (dashed line), and top part (dotted line) of the model. The vertical dashed gray lines show the border of the pores at x = 1.