Ionisation rates as function of the disc vertical column density at R = 1 AU for κ = 0.1. The lines in the viridis colour scale are the contribution to the ionisation rate coming from EPs accelerated in region at different Z/R. The thick orange line is the total ionisation rate corresponding to the weighted sum (Eq. (21)) of each local contribution. The black line is the ionisation rate from the stellar X-rays.