tmpRS = MIN( rF(k), rSigBndRS )
bHybSigmF(k) = ( rF(k) - tmpRS )/(rF(1)-rSigBndRS)
& *( tmpRS -rF(Nr+1) )*recip_fullDepth
tmpRS = MIN( rC(k), rSigBndRS )
bHybSigmC(k) = ( rC(k) - tmpRS )/(rF(1)-rSigBndRS)
tmpRS = MAX( rF(k), rSigBndRS )
bHybSigmF(k) = ( rF(k)-rF(Nr+1) )/( tmpRS-rF(Nr+1) )
aHybSigmF(k) = bHybSigmF(k)*( tmpRS-rF(1) )*recip_fullDepth
tmpRS = MAX( rC(k), rSigBndRS )
bHybSigmC(k) = ( rC(k)-rF(Nr+1) )/( tmpRS-rF(Nr+1) )
aHybSigmC(k) = bHybSigmC(k)*( tmpRS-rF(1) )*recip_fullDepth
_RS rSigBndRS, tmpRS