Notes. Columns are (from left to right): The date of the LDGRF event, the speed of the shock associated with the CME (v_sh), the time of CME first appearance in the LASCO C2 field of view; obtained from the SOHO/LASCO CME catalogue, the duration of the detected γ ray emission from the Fermi LAT instrument (D); obtained from Table 1 of Winter et al. (2018), the position of the shock at the end time of detected γ ray emission of the event (r_fin); determined using Eq. (8), and the total precipitation fraction () over the propagation of the shock from r_ini (1.20 R_⊙, the median shock formation height as determined by Gopalswamy et al. 2013b) to r_fin; determined using Eq. (9). The total precipitation fraction considers the fact that the instantaneous precipitation fraction decreases with the radial dependence as shown in Fig. 4 and assumes that the scattering can be described by λ = 0.1 AU. There were two CMEs associated with the 2012 March 7 event, consequently 2 shocks were formed. CME (a) entered the LASCO C2 field of view at 00:24:06 UT and was associated with a X5.4 flare; the second CME, (b), entered the LASCO C2 field of view at 01:30:24 UT and was linked to a X1.3 flare.