Location of emission of the forsterite features at 11, 24, 33 and 69 μm (top to bottom) for models R20 (left) and RW30 (right). Overplotted is the radial τ = 1 surface in the optical. Contours are given as a fraction of the maximum emission, and are between 1 and 100%. The emission has been integrated over the azimuthal direction. The emission locations are asymmetric around midplane, because the disk is seen from above, and therefore we do not see the bottom half of the disk. Contours are drawn as fraction of the peak intensity at 100%, 10% and 1%, and color coded with dark grey between 10% and 100% and light grey between 1% and 10%.