If you use that data, it looks (shortened) like this, ie much too long for (my) hotbars:
Therefore I decided to use the pure numbers and cut them off like 2.... where they become too long. That only happens for spells with reuse times longer than 999 seconds in the default 32 pixel hotbar icon size, and with larger icons it's no problem at all. You could of course also use a smaller font, but I preferred to have it easily readable.