Imho having [space] as a separator for labelled variables is a really BAD idea...

If you plot integers with labels, that have a variable number of digits, but a padded length (to print as a table),
they will print with a variable number of spaces making the plot color jump from one color to another one as the number of relevant digits of the variables printed before changes... :-(

Please consider using the comma (or another character e.g. | ) as a reliable separator instead.