Optimum performance

This figure represents a series of three curves with

Percentage pre-calculated in X,
Percentage of Maximum in Y

both axes runs from 0 to 100%.

Query Time runs: (0,100) (10,50) (50,5) (100,20)
Fully Calculated Database size runs: (0,0) (30, 40) (100, 100)
Data load and pre-calcu;lation time runs: (0,0) (25, 50) (30, 70) (100, 100)

There is a mention of Optimum pre-calculation zone covering roughly a rectangle (10, 0), (10, 80), (52, 80), (52, 0)