Magnetic field and plasma measurements taken during the SEP event at the observers used in the transport analysis at STA (left), SolOr (middle), and Earth (right) by means of Wind and SOHO data. For each observer, from top to bottom, the panels display the electron fluxes, magnitude, co-latitudinal and azimuthal angles of the HMF, plasma temperature, dynamic pressure and density, and velocity of the solar wind. Plasma and solar wind measurements were not available for SolO due to data gap in SWA.