Clean up the headngs first somehow -- either parse whatever you're reading and make useful variable names then or fix up the spreadsheet by hand or make a lookup table in MATLAB code to assign variable names by column position, ignoring the mess in the spreadsheet -- or some combination of any/all of the above.
As for reordering, if you have variables named, there's no need necessarily to order them, just reference the variables needed in whatever order/position you need them -- that can be either by name or position.
But, if you really want to reorder the table, that's also simply writing a vector of columns by the desired position --
tYourTableVariable=tYourTableVariable(:[1 5 3 ...]);
where you set the order (and those variables wanted by the order/content of the addressing vector.
