You can use the values from the Density column of this table with PROC GCONTOUR to plot the 1, 5, 10, 50, 90, 95, and 99 percent levels of the density: proc gcontour data=o1; plot y*x=density / ...

After publication of an earlier version of this paper, we received feedback that there were several incorrect references to related methods in the literature. These errors are corrected in the current ...