I am trying to develop viscoeleastic model for a polymer material using the prony series. I know that the first step always is to construct the master curve. My data is give as Modulus vs temperature for a very large range of temperature. I only have 3 frequency which can not be used to fit the data to any curve. Is there a way to use the temperature sweep to determine the master curve instead of the frequency, I know that there is a duality between temperature and frequencies, I appreciate if you can help with some idea.