Actual joint distribution of (p,β) (top left) of synthetic asteroids compared to the solution of the WISE-based inverse problem (top right). The colours depict the occupation number of each (p,β)-cell (on arbitrary scales). The absolute value of the ecliptic latitude of the spin axis decreases from bottom (perpendicular to the ecliptic plane) to top (in the ecliptic plane), and the shape elongation decreases from left (thin cigar) to right (sphere). On the bottom is the solution of the inverse problem after applying deconvolution for correction.