A new version of the PESSTO Transient Catalogue and of the PESSTO Multi-Epoch Photometric Catalogue now complement the previously released (DR3) spectra and images of the PESSTO Public Spectroscopic Survey acquired during the survey's four years of operations.

• The transient catalogue lists all the PESSTO sources for which a meaningful spectral classification has been obtained up to April 30, 2016 (1035 sources). It includes various parameters that characterize scientifically these transients and their host galaxies.
• The multi-epoch photometric catalogue provides the lightcurves for the 32 PESSTO targets whose follow-up lightcurves have been completed.

Note: This release also includes updated versions of 20 archived spectra. These spectra were erroneously associated to a given transient in a host; This is typically the case when different transients occurred in the same host galaxy. The release description of these spectra  describes the new associations of the transient spectra in details, see the Previous Releases section of this document.

This PESSTO public survey data release (DR3.1) is accompanied by a comprehensive description of spectra, images, and of the transient catalogue. A dedicated description of the lightcurve catalogue is also available. Instructions on how to read or display data in the ESO/SDP tabular data format can be found in the 1D spectrum data format help page.