Ionic fraction data
Mazzotta et al.(1998) - Helium

LOG T   +0      +1      +2

 4.00    -0.000                 
 4.10    -0.000                 
 4.20    -0.000  -3.993         
 4.30    -0.002  -2.258         
 4.40    -0.058  -0.904         
 4.50    -0.478  -0.175         
 4.60    -1.263  -0.024  -3.755 
 4.70    -1.970  -0.007  -2.202 
 4.80    -2.455  -0.048  -0.997 
 4.90    -2.934  -0.335  -0.270 
 5.00    -3.640  -0.948  -0.052 
 5.10    -4.369  -1.592  -0.011 
 5.20            -2.153  -0.003 
 5.30            -2.629  -0.001 
 5.40            -3.032  -0.000 
 5.50            -3.377  -0.000 
 5.60            -3.676  -0.000 
 5.70            -3.937  -0.000 
 5.80            -4.167  -0.000