Phreeqc - Database - gamma

[Hentscher]

For some species in the Phreeqc database are appearing two entries for gamma, which one is used for my calculation?

Na+ = Na+
   -gamma   4.0    0.075
   -gamma   4.08 0.082 # halite solubility
   -dw    1.33e-9
   -Vm   2.28  -4.38  -4.1  -0.586  0.09  4  0.3  52  -3.33e-3  0.566 # ref. 1

[dlparkhurst]

The last definition will take precedence.