Three-dimensional model of the Sun with the reconstructed filament. Red points show the reconstructed heights of the filament. The dark red line shows a linear fit and the red dashed lines represent projections onto equatorial (green) and meridional (red) planes. The black line indicates the radial direction, and the dashed black line shows its projection onto the equatorial plane. Equatorial and meridional planes both go through the intersection of the linear fit with the solar surface (filament origin). The radial direction is located in the meridional plane by definition. For clarity, the heliocentric coordinates grid is shown in gray. The inclination angle from the radial in the equatorial plane is shown as a yellow arc, and the inclination angle in the meridional plane is shown as two red arcs, respectively.