Corner plot for the astrometry parameters for PSR J1858−5422, showing resulting posterior distributions for radio-only (red), gamma-ray-only (blue) and joint-radio-and-gamma-ray (black) timing analyses. The 1D posterior distributions on the diagonal are given in arbitrary units. The high S/N data allow us to pin down the positional parameters more precisely, while the proper motion parameters are measured more accurately by the long-term gamma-ray data. The sensitivity improvement of the joint analysis allows the precise measurement of all four parameters. The complete plot with posterior distributions for all pulsar parameters is shown in Fig. A.5.