[texhax] Alignment with respect to symbol

[zacharia]

Hello,

I have here a table with numbers having the error bar (something like 
48.0 $\pm$ 3.2)
Is there any method to align with first decimal, symbol($\pm$) and 
second decimal.
or at least some method to align with respect to symbol alone?

I have tried some expts with multicolumn... with out much success :(

La_TeXnicians, pls help...

Thanx a lot

Zach