Peak X-ray luminosities L_X, peak in the 0.3–10 keV band, and durations T₉₀ (Table B.1) of distant FXTs (red stars) and durations t above the assumed flux limit of off-axis merger-induced GRB X-ray afterglows (coloured points). The latter is shown for different viewing angles θ_obs/θ_C. The histograms show the sample distributions of the luminosity and duration of FXTs on one hand and GRBs on the other hand; over-plotted on the histograms are the corresponding normalised probability densities (red dashed lines and coloured solid lines corresponding to the sample of FXTs and GRBs, respectively) showing how the distributions of the peak X-ray luminosity and duration shift with increasing viewing angle (θ_obs/θ_C). Results on the left correspond to the uniform-jet model, and those on the right to the structured-jet model with θ_W = 2θ_C.