Computational data on Sₙ-extensions of Q

We discuss computational results on field extensions K/ Q of degree n≤11 with Galois group of the Galois closure isomorphic to the full symmetric group Sₙ. More precisely, we present statistics on the number of such extensions as a function of the field discriminant and compare them to the known predictions by Bhargava and the author. We also investigate the numbers of fields with equal discriminant and tabulate class numbers and class groups to compare them against Cohen--Lenstra--Martinet type of heuristics and their proposed improvements.