Getting 33rd and 66th percentiles on the table of statistics

There is a good tool to provide data statistics within Leapfrog.

It provides the following:

Count, Length, Mean, Std. Dev., Coeff.Var., Minimum, L. quartile, Median, U.Quartile, Maximum

The L. quartile corresponds to the 25th percentile., the median to the 50th percentile and the U. quartile corresponds to the 75th percentile.

It there a way to include the 33rd and 66th percentiles? I would imagine that since the logic of the calculation for the other percentiles is there. It should be pretty easy to inlcude this other percentiles.

Below is a screen shot of the current table of statistics.