From: Testing the Coulomb/Accessible Surface Area solvent model for protein stability, ligand binding, and protein design
atom type
range
interval
unpolar
-0.005 to 0.01
0.005
aromatic
-0.08, -0.06 to 0.01
0.01
polar
-0.12, -0.10 to -0.04
ionic
-0.20, -0.18 to -0.10
ε
16 to 32
8