Although I would point out the chart was based just on observation of olympic lifters, not powerlifters, who were fairly mature in their development, and were lifting fairly heavy weights at high speeds. If you're performing the powerlifts and don't have a 600lb squat, the amount of volume you can tolerate at a given percentage of your 1RM may vary significantly.
Namely you should be able to do potentially more volume at the higher ends of your percentage, because you aren't fucking yourself up as badly as someone who can put significantly more weight on their body. In particular keep in mind that good execution of the Oly lifts requires that you haven't acquired significant fatigue.