Kell, G. S., G. E. McLaurin, and E. Whalley, Philos. Trans. R. Soc. London A 315, 235 (1985).

22 of 22 psigma data were selected to develop the IAPWS-95 Formulation.
Temperatures were converted to the ITS-90 scale.
 
 T / K           psigma / MPa  Author                             No.
  423.1149         0.475700000 KELL et al. (1985)                 001
  423.1149         0.475600000 KELL et al. (1985)                 002
  423.1149         0.475500000 KELL et al. (1985)                 003
  423.1149         0.475300000 KELL et al. (1985)                 004
  423.1149         0.475700000 KELL et al. (1985)                 005
  448.1120         0.891700000 KELL et al. (1985)                 006
  448.1120         0.891700000 KELL et al. (1985)                 007
  473.1102         1.553600000 KELL et al. (1985)                 008
  473.1102         1.553500000 KELL et al. (1985)                 009
  498.1096         2.547500000 KELL et al. (1985)                 010
  498.1096         2.547500000 KELL et al. (1985)                 011
  523.1097         3.974100000 KELL et al. (1985)                 012
  523.1097         3.973300000 KELL et al. (1985)                 013
  548.1101         5.941300000 KELL et al. (1985)                 014
  548.1101         5.941300000 KELL et al. (1985)                 015
  573.1105         8.582100000 KELL et al. (1985)                 016
  573.1105         8.582300000 KELL et al. (1985)                 017
  598.1102        12.044800000 KELL et al. (1985)                 018
  598.1102        12.044300000 KELL et al. (1985)                 019
  623.1090        16.522000000 KELL et al. (1985)                 020
  623.1090        16.522000000 KELL et al. (1985)                 021
  623.1090        16.519600000 KELL et al. (1985)                 022
