ISTA-P size?

[Eyestorm]

Hello

My ISTA-P folder is 67,1Gb. Is this the full versjon ISTA-P?
The PSdZdata folder is 26,4Gb.

Im I missing some files or is it all there?

I see there is PSdZdata(full) I can dowload here and that file is almost 200gb!! 

Im trying too learn mor about ISTA-P and I cant find anyting about it on Google.