Vaporents

Honestly, I sometimes start pretty low temp to get the most out of the terps, but I always finish on high temps. For bong rips, I go high temp straight away.

As for this chart - there's been much debate around it, the accuracy is questionable at best. As soon as you have multiple compounds with different boiling points, it goes out of the window anyway because that changes the boiling points of all substances in the mix.