These images are deliberately simple, designed to produce a series of thumbnail pictures for the Master Data input form - 'real' structures generated from real experimental data will be much more complicated.

The structures are all variants of an original fit to mercury porosimetry of an array of glass beads.
They are all completely empty of fluids, colloids etc.
All have a porosity of 10.15%, a minimum throat diameter of 28.64 um, a maximum throat diameter of 666.667 um, a connectivity of 2.4, a throat skew of 2.7, a pore skew of 2.904.
For all the structures the correlation level is 1.0 except for the random structure which has a correlation level of 0.0.
Some small features may have been omitted for clarity.