Constraints on the orbital orientation from the χ² mapping of DDGR solutions consistent with Eq. (11). The constraints have been derived in the global fit and assuming the Cs noise model (Table 2) Central plots: two-dimensional constraints in the Ω_a − cos i space. The solid contours represent the explored space (cos i > 0), while the dashed contours are derived from symmetries in eq. (11) (cos i < 0). Corner plots, top: marginalised one-dimensional probability densities for cos i, showcasing the median value (solid black lines) and the 31.4%, 47.4%, and 49.9% percentiles (shaded areas under the curve, blue for cos i > 0 and purple for cos i < 0). Corner plot, right: marginalised one-dimensional probability densities for Ω_a from cos i > 0 and cos i < 0 (solid and dashed lines, respectively) and the addition of both (shaded cyan area).