coefficients for fs potential in silver 20.368404 -102.36075 94.31277 -6.220051 31.08088 175.56047 1.2247449 1.1547054 1.1180065 1.000000 0.8660254 0.7071068 1.458761 42.946555 1.2247449 1.0000000 4.086 18.014e-26