It's ok to keep as is, if it's documented. Is it?
Also it would be perhaps nice to give a warning where Tecplot reads data which it finds are not separated by spaces. I.e. I have 0.234345345435645674574574567 and it reads it as 0.234345345435645674574574567, but it does notice that a space is missing. (I didn't put the effort to count the digits and the number is off, but you get the idea.)