Nice job on the table, I really like the white oak. Very similar to a couple of teak door mats I made. [smile]
[attachimg=1]
You may want to do something with the exposed end grain on the legs. The end grain sucks up water and stays wet when it's in contact with a supporting surface. It gets soft and if you don't completely lift the article to move it, small splinters of wood break off or crack from the sideways pressure. I learned the hard way. [sad]
My solution was to thoroughly dry the legs (about 3-4 days) and apply several coats of epoxy to the bottom surface. Then top it with a small plastic glider. The epoxy prevents the end grain from acting like straws and the glider prevents wear on the epoxy surface. The glides would work extremely well on your porcelain tile surface.
[attachimg=2]
[attachimg=3]