Percentage of origin and type (photometric, spectroscopic) of the redshifts reported in PSZ1. To date, associations with MCXC clusters provide 49.8% of the redshifts, all spectroscopic. Follow-up observations by the Planck collaboration (FUs) provide 24.6% of the redshifts, of which 64.73% are spectroscopic. Associations with clusters from SDSS-based catalogues result in 11.7% of all redshifts, of which 58.9% are spectroscopic. Redshifts from the NED and SIMBAD databases represent 5.9% of all redshifts, 90.7% of which are spectroscopic. PanSTARRS data confirm 4.4% of the total redshift number, all of them photometric. Finally, the association with SZ catalogues (SPT and ACT) represents 3.5% of all redshifts, of which 71.9% are spectroscopic.