SACS PSI model using CPT data

I have a some offshore cone penetration test (CPT) data (qc, fs, u2, Fr etc.). 

Is there a method (theoretical or otherwise) that will allow me to convert my CPT data to t-z curves so I can generate my psi file?? (Or can I somehow input my CPT data directly in my psi file?)
The papers I've found suggest that there is a method but none of the articles I can access have elaborated.

Any help would be appreciated.