# To model PCM hysteresis in EnergyPlus, what are the high/low temp difference of freezing/melting curves?

I read the EnergyPlus input output reference to see what are the inputs for modeling PCM hysteresis, but I can't understand what is the input for Low Temperature/ High Temperature Difference of Melting / Freezing Curve. Can someone explain in a graphic way what these fields mean? Thanks in advance for your help.

I am looking for the same information. Can anyone help, please. Your cooperation is highly appreciated. Thank you.