You're preaching to the converted there, Marc. I'm very much a plain ASCII man myself.
But, don't you use any database software at all? Access, dBASE, FoxPro, Paradox ... ? If you want, get those text EST results to me and I'll get them converted into .dbf, or whatever. Actually, I would be interested in taking a look at that data anyway, purely from an academic point of view.
Meanwhile, perhaps I'm being a bit thick (?), but I can't really see why you want to store EST results in .pdf. Get them into .dbf, then you can do anything you want (except make pretty pictures, that is).

PS: I'll leave it to others to ponder
why you would want to save all those results! Why not simply use a "Pass/Fail" flag?