Angell, C. A., M. Oguni, and W. J. Sichina, J. Phys. Chem. 86, 998 (1982).

30 of 31 cp data were selected to develop the IAPWS-95 Formulation.
Temperatures were converted to the ITS-90 scale.
 
 T / K          p / MPa       cp /(kJ/(kg K)) Author                             No.
  289.995851267    0.101325000    4.185354589 ANGELL et al. (1982)               001
  284.997114647    0.101325000    4.185354589 ANGELL et al. (1982)               002
  279.998352334    0.101325000    4.190905458 ANGELL et al. (1982)               003
  274.999560890    0.101325000    4.185354589 ANGELL et al. (1982)               004
  270.000736976    0.101325000    4.229761535 ANGELL et al. (1982)               005
  270.000736976    0.101325000    4.213108930 ANGELL et al. (1982)               006
  265.001877368    0.101325000    4.251965007 ANGELL et al. (1982)               007
  265.001877368    0.101325000    4.202007194 ANGELL et al. (1982)               008
  265.001877368    0.101325000    4.240863271 ANGELL et al. (1982)               009
  260.002978972    0.101325000    4.301922821 ANGELL et al. (1982)               010
  260.002978972    0.101325000    4.290821084 ANGELL et al. (1982)               011
  260.002978972    0.101325000    4.268617612 ANGELL et al. (1982)               012
  255.004038842    0.101325000    4.346329766 ANGELL et al. (1982)               013
  255.004038842    0.101325000    4.412940184 ANGELL et al. (1982)               014
  255.004038842    0.101325000    4.368533239 ANGELL et al. (1982)               015
  250.005054188    0.101325000    4.473999734 ANGELL et al. (1982)               016
  250.005054188    0.101325000    4.562813624 ANGELL et al. (1982)               017
  250.005054188    0.101325000    4.518406679 ANGELL et al. (1982)               018
  245.006022397    0.101325000    4.684932723 ANGELL et al. (1982)               019
  245.006022397    0.101325000    4.690483592 ANGELL et al. (1982)               020
  242.006579679    0.101325000    4.906967450 ANGELL et al. (1982)               021
  240.006941042    0.101325000    5.145654780 ANGELL et al. (1982)               022
  240.006941042    0.101325000    5.145654780 ANGELL et al. (1982)               023
  240.006941042    0.101325000    5.073493494 ANGELL et al. (1982)               024
  239.007118623    0.101325000    5.240019539 ANGELL et al. (1982)               025
  238.007294116    0.101325000    5.362138638 ANGELL et al. (1982)               026
  238.007294116    0.101325000    5.373240375 ANGELL et al. (1982)               027
  238.007294116    0.101325000    5.334384298 ANGELL et al. (1982)               028
  237.007467503    0.101325000    5.478706870 ANGELL et al. (1982)               029
  236.007638768    0.101325000    5.672987255 ANGELL et al. (1982)               030