Exposure X of the Mini-EUSO telescope as a function of the pre-atmospheric mass of the meteoroids, M_∞ , estimated thanks to the methodology described in Appendix D and according to the formulation of the luminous efficiency of Ceplecha & McCrosky (1976). The green points report the result of the bootstrap ensemble of 100 repetitions and their spread highlights the uncertainty in the determination of the exposure. The thick green line plots the ensemble mean and the green band reports the 68% confidence interval estimated through the ensemble standard deviation for each mass bin.