...
mdefine poly_model15 e*(0.97298342 + e*(-0.70321279 + e*(0.5436520 + e*(-0.27676659 + e*0.063628444))))+dummy
mdefine model15 8.0525*poly_model15(0.0)**2/kT**4/(exp(poly_hz43(0.0)/kT)-1.0)
and then defined as
model hz43model15
0.013322768 -0.0001 0.01 0.01 0.02 0.02
0.040367661 0.001 0 0 1e+20 1e+24
...