Readme file for supplementar materal for the paper "Multiwavelength observations of PSR J2021+4026 across a mode change reveal a phase shift in its X-ray emission" Suppl_mat_J2021-timing-solution-full-mission.par PAR file used for the Full mission timing analysis Suppl_mat_J2021-timing-solution-local_obs_1.par Suppl_mat_J2021-timing-solution-local_obs_2.par PAR files used for the "local" timing analysis