PV Expansion: Vapor or Sublimation Pressure

ln(p/po) = a1 + a2/T + a3 ×ln(T) + a4 ×T + a5 ×T2 + a6/T2 + a7 ×T6+ a8/T4; where po = 1 kPa

example fitting results showing parameters (top fo bottom): a_1, a_2, a_3

NOTE: The TDE program truncates this equation based upon the extent and quality of the fitted data.