PsiPercentileD/PsiQtoX()

PsiPercentileD (cell,percentile,simulation) or PsiQtoX (cell,percentile,simulation)

PsiPercentileD/PsiQtoX return a descending percentile (.01-.99) value for the specified uncertain function cell: This means that m (or m%) of the simulation trials have values less than the returned value, where m is the percentile.