Figure 4.

Flowchart describing how the coefficients $m_0$, $m_1$, and $m_2$ in Equation (20) are determined for a given fluid. The fluid parameters are $p_c$, $T_c$, $\omega$, and $T_t$. The colored boxes indicate the steps for obtaining the predicted ${\sigma }_{DGT}$ at a temperature $T_i$ when $m_0$, $m_1$, and $m_2$ are known.