|WTT User's Guide|
ln(p/p°) = a1 + a2/T + a3×ln(T) + a4×T + a5×T2 + a6/T2 + a7×T6 + a8/T4
where p° = 1 kPa
The basis for this functional form is discussed in .
Please note that the equations described above are expressed in terms of vapor pressure and not in the necessary inverted form. The parameters for a given fit can be found in the model summary for the associated phase boundary pressure contour.
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