how we got this information of specific enthalpy ?

Thermodynamic Data \begin{tabular}{ccccc} \hline \multicolumn{4}{c}{H^(cal/mol)} & \\ \hline \multicolumn{3}{c}{ Acetone } & \multicolumn{2}{c}{ Acetic Acid } \\ T(C) & H^l & H^v & H^l & H^v \\ \hline 56.8 & 0 & 7205 & 0 & 5723 \\ 63.0 & 205 & 7322 & 194 & 6807 \\ 67.5 & 354 & 7403 & 335 & 6884 \\ 98.7 & 1385 & 7946 & 1312 & 7420 \\ \hline \end{tabular}