Is a table really the only way to represent this information? They can be great visually, but a very complex table, or one with a lot of columns, can be impossible to render in Braille; the Braille page has, at most, half the carrying capacity of the print page. Try blowing your font size up to 22, and see how much of your table is visible.
If your table is too complex, can you split the information in some way? Can it be rendered in text instead?
Be careful also that you don’t embed images into your tables; the information in them is lost to the Braille reader.