Freezing Point Depression in Properties

[mrbabu]

I am calculating freezing point depression of binary systems as water-methanol, water-ethanol etc. in Prode Properties
the procedure gives for water-methanol errors of 3-8 K against experimental data at different compositions with Wilson model, with NRTL errors are about the same, I guess that a selection of different BIPs could improve the accuracy of these predictions, how can I regress from a table of values ?
Thank you for assistance.

[carlo.stenali]

the simplified solid solution model available in Base Version of Prode Properties has several limits, for water-methanol you may consider CPA.