$//<![CDATA[ \begin{array}{l}\displaystyle B_o = c_1 + c_2 \cdot \left[ R_{sb} \left( \frac{\gamma_g}{\gamma_o} \right)^{c_4} + c_3 \, T \right]^{c_5}\end{array} //]]>$

$//<![CDATA[ \begin{array}{l}\displaystyle p_b = c_1 \left( \frac{R_{sb}}{\gamma_g} \right)^{c_5} \, c^T_3 \, c^{\gamma_o}_4 + c_2\end{array} //]]>$

$//<![CDATA[ \begin{array}{l}c_1 = 18.2, \ c_2 = -25.48 \cdot 10^{-4}, \ c_3 = 1.002, \ c_4 = 0.972, \ c_5 = 0.83\end{array} //]]>$

$//<![CDATA[ \begin{array}{l}\displaystyle R_{sb} = \gamma_g \cdot \big[ (c_1 + c_2 \, p_b) \, c^{\gamma_o}_3 \, c_4^T \big]^{c_5}\end{array} //]]>$

$//<![CDATA[ \begin{array}{l}c_1 = 1.4, \ c_2 = 0.055 \cdot 10^{-4}, \ c_3 = 1.03, \ c_4 = 0.998, \ c_5 = 1.2\end{array} //]]>$