Monte Carlo portfolio statistics interpretation


Can someone explain (or provide a reference where the doco explains) how to interpret the portfolio characteristics in the Monte Carlo reports? The mean and median returns are obvious but the ratio and beta are not, in light of the footnotes.

This is an example from a real portfolio in my database:

name, mean, median, ratio, beta
Portfolio 7, 8.816530, 7.696545, 0.213744, 0.050498