IRT/transact gets the general shape right but magnitude is wrong.
E.G. say max range for CD for 1 day is 100k. IQ/IRT, IQ/NT, and NT/ZF confirms this. IRT/TA may give 80k
Also, the entire time, we compared using "majority" rule..
Our setup was:
IQ (live)/IRT
IQ (live)/NT
IQ...