[NTG-context] table column alignment

More on tables and such: Looking through "The Elements of Typographic Style," the author recommends tables be aligned on the decimal or flush right. If there is no decimal in an entry using the decimal alignment, in effect such a number is aligned as if it had a decimal. What you get is something like: 10 10.2 10.34 I cannot seem to do this in ConTeXt. It seem either all figures must have a decimal, or must not. Bruce