Unless Rys has a table bbcode plugin installed, I believe your only option is to use the code option which accepts spacing. XF2.1 has table support built-in. Another option is a screenshot of the table of data to post as an image.
I've done screenshots of tables in the past, however, it isn't the best solution if moderators want to help/change data within a more real-time fashion. If the 'code' option is the only option... then it will have to do.