Games : What is the highest IQ you can earn in one episode?

Indiana Jones and the Last Crusade (graphic adventure) had an IQ system that rewarded you depending on how you solved a puzzle.

The IQ was split into 2 values:

• Episode - How many points you have earned on this playthrough


• Series - How many points you have earned across all playthroughs

Was is the highest episode IQ possible and how do you earn it?