where the adsorbate uptake n ads,sat N 2 is converted to units coherent with ρ liq N 2 . A large majority of characterization isotherms report the adsorbate uptake in cm 3 (STP)/g, thus yielding the gravimetric pore volume. In cases where the isotherm is reported in vol-umetric units for the adsorbent instead, the adsorbent density (which is not recorded in the NIST-ISODB) would be needed to obtain the gravimetric pore volume. While the density could be computed from the linked crystal structure, we decided to exclude these cases (less than 1 % of the characterization isotherms finally selected) in order to avoid additional methodological uncertainty as the authors may have used a different value for the density of the material than the one we would compute.