tmpa3 = -(0.07711*s) + (0.0041249*s15)
tmpa3 = -(0.10018*s) + (0.0059415*s15)
_RL s15
s15=s**1.5 _d 0
& 77.942 _d 0*s + 1.728 _d 0*s15 - 0.0996 _d 0*s2)*invtk +
s15=s**1.5
& 1.728*s15 - 0.0996*s2)*invtk +